./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_simpl4.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 1680e665d6c38e33bd93081ad3c7b8b4f909838cd1480382a495b19dd638ce67 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:33:59,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:33:59,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:33:59,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:33:59,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:33:59,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:33:59,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:33:59,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:33:59,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:33:59,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:33:59,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:33:59,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:33:59,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:33:59,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:33:59,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:33:59,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:33:59,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:33:59,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:33:59,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:33:59,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:33:59,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:33:59,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:33:59,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:33:59,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:33:59,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:33:59,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:33:59,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:33:59,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:33:59,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:33:59,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:33:59,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:33:59,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:33:59,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:33:59,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:33:59,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:33:59,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:33:59,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:33:59,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:33:59,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:33:59,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:33:59,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:33:59,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:33:59,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:33:59,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:33:59,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:33:59,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:33:59,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:33:59,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:33:59,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:33:59,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:33:59,315 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:33:59,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:33:59,316 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:33:59,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:33:59,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:33:59,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:33:59,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:33:59,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:33:59,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:33:59,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:33:59,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:33:59,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:33:59,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:33:59,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:33:59,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:33:59,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:33:59,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:33:59,320 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:33:59,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:33:59,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:33:59,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:33:59,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1680e665d6c38e33bd93081ad3c7b8b4f909838cd1480382a495b19dd638ce67 [2021-12-22 08:33:59,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:33:59,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:33:59,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:33:59,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:33:59,517 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:33:59,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-12-22 08:33:59,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bdc7b0b2/5e30756d9bfe4495b2081897ffd295f5/FLAGb80fc6c7f [2021-12-22 08:33:59,922 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:33:59,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-12-22 08:33:59,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bdc7b0b2/5e30756d9bfe4495b2081897ffd295f5/FLAGb80fc6c7f [2021-12-22 08:34:00,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bdc7b0b2/5e30756d9bfe4495b2081897ffd295f5 [2021-12-22 08:34:00,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:34:00,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:34:00,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:34:00,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:34:00,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:34:00,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bcc1a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00, skipping insertion in model container [2021-12-22 08:34:00,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:34:00,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:34:00,601 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_simpl4.cil-1.c[48581,48594] [2021-12-22 08:34:00,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:34:00,611 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:34:00,681 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_simpl4.cil-1.c[48581,48594] [2021-12-22 08:34:00,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:34:00,692 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:34:00,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00 WrapperNode [2021-12-22 08:34:00,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:34:00,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:34:00,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:34:00,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:34:00,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,781 INFO L137 Inliner]: procedures = 41, calls = 77, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2021-12-22 08:34:00,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:34:00,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:34:00,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:34:00,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:34:00,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:34:00,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:34:00,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:34:00,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:34:00,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (1/1) ... [2021-12-22 08:34:00,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:34:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:34:00,887 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) [2021-12-22 08:34:00,896 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 [2021-12-22 08:34:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:34:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-22 08:34:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-22 08:34:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-22 08:34:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-22 08:34:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-22 08:34:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-22 08:34:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-22 08:34:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-22 08:34:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-22 08:34:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-22 08:34:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:34:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-22 08:34:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-22 08:34:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-22 08:34:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-22 08:34:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:34:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:34:01,131 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:34:01,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:34:01,136 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,189 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-22 08:34:01,189 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-22 08:34:01,190 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 08:34:01,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 08:34:01,206 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,211 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,215 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,216 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,218 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,219 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,251 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,699 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-12-22 08:34:01,699 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2021-12-22 08:34:01,699 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2021-12-22 08:34:01,700 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2021-12-22 08:34:01,700 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2021-12-22 08:34:01,700 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-12-22 08:34:01,700 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2021-12-22 08:34:01,709 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2021-12-22 08:34:01,710 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-12-22 08:34:01,712 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-22 08:34:01,750 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-22 08:34:01,753 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,753 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,753 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:34:01,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-22 08:34:01,775 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-22 08:34:01,775 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-22 08:34:01,775 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-22 08:34:01,776 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-22 08:34:01,776 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-22 08:34:01,784 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:34:01,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:34:01,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 08:34:01,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:01 BoogieIcfgContainer [2021-12-22 08:34:01,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:34:01,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:34:01,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:34:01,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:34:01,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:34:00" (1/3) ... [2021-12-22 08:34:01,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b0da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:01, skipping insertion in model container [2021-12-22 08:34:01,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:00" (2/3) ... [2021-12-22 08:34:01,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b0da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:01, skipping insertion in model container [2021-12-22 08:34:01,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:01" (3/3) ... [2021-12-22 08:34:01,808 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2021-12-22 08:34:01,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:34:01,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:34:01,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:34:01,872 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 [2021-12-22 08:34:01,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:34:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 285 states have internal predecessors, (394), 51 states have call successors, (51), 7 states have call predecessors, (51), 7 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-22 08:34:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 08:34:01,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:01,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:01,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -567536429, now seen corresponding path program 1 times [2021-12-22 08:34:01,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:01,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513162478] [2021-12-22 08:34:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:01,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513162478] [2021-12-22 08:34:02,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513162478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:02,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898232937] [2021-12-22 08:34:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:02,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:02,126 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 285 states have internal predecessors, (394), 51 states have call successors, (51), 7 states have call predecessors, (51), 7 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) 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) [2021-12-22 08:34:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:02,228 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2021-12-22 08:34:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:02,230 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 [2021-12-22 08:34:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:02,251 INFO L225 Difference]: With dead ends: 512 [2021-12-22 08:34:02,251 INFO L226 Difference]: Without dead ends: 312 [2021-12-22 08:34:02,257 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 [2021-12-22 08:34:02,261 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 261 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:02,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-22 08:34:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-22 08:34:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 254 states have (on average 1.4803149606299213) internal successors, (376), 278 states have internal predecessors, (376), 51 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-22 08:34:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 456 transitions. [2021-12-22 08:34:02,321 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 456 transitions. Word has length 13 [2021-12-22 08:34:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:02,322 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 456 transitions. [2021-12-22 08:34:02,322 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) [2021-12-22 08:34:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 456 transitions. [2021-12-22 08:34:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 08:34:02,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:02,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:34:02,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1839207005, now seen corresponding path program 1 times [2021-12-22 08:34:02,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:02,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119637970] [2021-12-22 08:34:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:02,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119637970] [2021-12-22 08:34:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119637970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:02,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801052598] [2021-12-22 08:34:02,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:02,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:02,402 INFO L87 Difference]: Start difference. First operand 312 states and 456 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:34:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:02,512 INFO L93 Difference]: Finished difference Result 564 states and 814 transitions. [2021-12-22 08:34:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:02,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-22 08:34:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:02,516 INFO L225 Difference]: With dead ends: 564 [2021-12-22 08:34:02,516 INFO L226 Difference]: Without dead ends: 432 [2021-12-22 08:34:02,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:02,519 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 362 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:02,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 761 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-22 08:34:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 413. [2021-12-22 08:34:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4039548022598871) internal successors, (497), 358 states have internal predecessors, (497), 49 states have call successors, (49), 11 states have call predecessors, (49), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2021-12-22 08:34:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 598 transitions. [2021-12-22 08:34:02,542 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 598 transitions. Word has length 16 [2021-12-22 08:34:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:02,543 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 598 transitions. [2021-12-22 08:34:02,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:34:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 598 transitions. [2021-12-22 08:34:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 08:34:02,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:02,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:02,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 08:34:02,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -866854956, now seen corresponding path program 1 times [2021-12-22 08:34:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653563758] [2021-12-22 08:34:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:02,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653563758] [2021-12-22 08:34:02,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653563758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:02,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961546640] [2021-12-22 08:34:02,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:02,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:02,609 INFO L87 Difference]: Start difference. First operand 413 states and 598 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) [2021-12-22 08:34:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:02,634 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2021-12-22 08:34:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:02,635 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 [2021-12-22 08:34:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:02,637 INFO L225 Difference]: With dead ends: 520 [2021-12-22 08:34:02,637 INFO L226 Difference]: Without dead ends: 499 [2021-12-22 08:34:02,638 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 [2021-12-22 08:34:02,639 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 407 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:02,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 545 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-22 08:34:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 467. [2021-12-22 08:34:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 401 states have (on average 1.399002493765586) internal successors, (561), 412 states have internal predecessors, (561), 51 states have call successors, (51), 14 states have call predecessors, (51), 14 states have return successors, (59), 43 states have call predecessors, (59), 41 states have call successors, (59) [2021-12-22 08:34:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 671 transitions. [2021-12-22 08:34:02,682 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 671 transitions. Word has length 19 [2021-12-22 08:34:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:02,682 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 671 transitions. [2021-12-22 08:34:02,683 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) [2021-12-22 08:34:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 671 transitions. [2021-12-22 08:34:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 08:34:02,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:02,689 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] [2021-12-22 08:34:02,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 08:34:02,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 122564209, now seen corresponding path program 1 times [2021-12-22 08:34:02,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983200078] [2021-12-22 08:34:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:02,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983200078] [2021-12-22 08:34:02,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983200078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:02,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268058352] [2021-12-22 08:34:02,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:02,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:02,762 INFO L87 Difference]: Start difference. First operand 467 states and 671 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) [2021-12-22 08:34:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:02,793 INFO L93 Difference]: Finished difference Result 877 states and 1248 transitions. [2021-12-22 08:34:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:02,794 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 [2021-12-22 08:34:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:02,797 INFO L225 Difference]: With dead ends: 877 [2021-12-22 08:34:02,797 INFO L226 Difference]: Without dead ends: 646 [2021-12-22 08:34:02,798 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 [2021-12-22 08:34:02,799 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 397 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 658 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 [2021-12-22 08:34:02,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 658 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-22 08:34:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 621. [2021-12-22 08:34:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 538 states have (on average 1.3866171003717471) internal successors, (746), 546 states have internal predecessors, (746), 61 states have call successors, (61), 22 states have call predecessors, (61), 21 states have return successors, (80), 55 states have call predecessors, (80), 53 states have call successors, (80) [2021-12-22 08:34:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 887 transitions. [2021-12-22 08:34:02,822 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 887 transitions. Word has length 22 [2021-12-22 08:34:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:02,823 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 887 transitions. [2021-12-22 08:34:02,823 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) [2021-12-22 08:34:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 887 transitions. [2021-12-22 08:34:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 08:34:02,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:02,824 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] [2021-12-22 08:34:02,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 08:34:02,825 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -826632207, now seen corresponding path program 1 times [2021-12-22 08:34:02,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:02,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045143275] [2021-12-22 08:34:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:02,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 08:34:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:02,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:02,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045143275] [2021-12-22 08:34:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045143275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:02,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161743759] [2021-12-22 08:34:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:02,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:02,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:02,875 INFO L87 Difference]: Start difference. First operand 621 states and 887 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:03,126 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2021-12-22 08:34:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-12-22 08:34:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:03,129 INFO L225 Difference]: With dead ends: 690 [2021-12-22 08:34:03,129 INFO L226 Difference]: Without dead ends: 685 [2021-12-22 08:34:03,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:03,130 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 118 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:03,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1263 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-12-22 08:34:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 662. [2021-12-22 08:34:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 577 states have (on average 1.3795493934142113) internal successors, (796), 585 states have internal predecessors, (796), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-22 08:34:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 942 transitions. [2021-12-22 08:34:03,151 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 942 transitions. Word has length 29 [2021-12-22 08:34:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:03,151 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 942 transitions. [2021-12-22 08:34:03,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:34:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 942 transitions. [2021-12-22 08:34:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 08:34:03,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:03,152 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] [2021-12-22 08:34:03,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 08:34:03,153 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -205375591, now seen corresponding path program 1 times [2021-12-22 08:34:03,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:03,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889353661] [2021-12-22 08:34:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:03,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889353661] [2021-12-22 08:34:03,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889353661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:03,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:03,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:03,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535032681] [2021-12-22 08:34:03,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:03,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:03,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:03,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:03,198 INFO L87 Difference]: Start difference. First operand 662 states and 942 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-12-22 08:34:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:03,254 INFO L93 Difference]: Finished difference Result 677 states and 962 transitions. [2021-12-22 08:34:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 [2021-12-22 08:34:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:03,258 INFO L225 Difference]: With dead ends: 677 [2021-12-22 08:34:03,258 INFO L226 Difference]: Without dead ends: 674 [2021-12-22 08:34:03,259 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 [2021-12-22 08:34:03,259 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 20 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:03,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 784 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-12-22 08:34:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 673. [2021-12-22 08:34:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.3775510204081634) internal successors, (810), 595 states have internal predecessors, (810), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-22 08:34:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 956 transitions. [2021-12-22 08:34:03,280 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 956 transitions. Word has length 28 [2021-12-22 08:34:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 956 transitions. [2021-12-22 08:34:03,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-12-22 08:34:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 956 transitions. [2021-12-22 08:34:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 08:34:03,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:03,282 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] [2021-12-22 08:34:03,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 08:34:03,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1532855089, now seen corresponding path program 1 times [2021-12-22 08:34:03,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:03,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389766003] [2021-12-22 08:34:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:03,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 08:34:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389766003] [2021-12-22 08:34:03,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389766003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:03,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:03,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:03,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293897084] [2021-12-22 08:34:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:03,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:03,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:03,367 INFO L87 Difference]: Start difference. First operand 673 states and 956 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-12-22 08:34:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:03,722 INFO L93 Difference]: Finished difference Result 705 states and 995 transitions. [2021-12-22 08:34:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 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 31 [2021-12-22 08:34:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:03,726 INFO L225 Difference]: With dead ends: 705 [2021-12-22 08:34:03,727 INFO L226 Difference]: Without dead ends: 696 [2021-12-22 08:34:03,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:03,731 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 652 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:03,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 1206 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-22 08:34:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2021-12-22 08:34:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.3741496598639455) internal successors, (808), 595 states have internal predecessors, (808), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-22 08:34:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 954 transitions. [2021-12-22 08:34:03,755 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 954 transitions. Word has length 31 [2021-12-22 08:34:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:03,756 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 954 transitions. [2021-12-22 08:34:03,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-12-22 08:34:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 954 transitions. [2021-12-22 08:34:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 08:34:03,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:03,758 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] [2021-12-22 08:34:03,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 08:34:03,759 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -614943130, now seen corresponding path program 1 times [2021-12-22 08:34:03,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:03,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815890307] [2021-12-22 08:34:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:03,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 08:34:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:03,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:03,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815890307] [2021-12-22 08:34:03,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815890307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:03,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:03,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:03,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165035418] [2021-12-22 08:34:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:03,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:03,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:03,854 INFO L87 Difference]: Start difference. First operand 673 states and 954 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-12-22 08:34:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:04,337 INFO L93 Difference]: Finished difference Result 705 states and 993 transitions. [2021-12-22 08:34:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:04,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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 32 [2021-12-22 08:34:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:04,340 INFO L225 Difference]: With dead ends: 705 [2021-12-22 08:34:04,340 INFO L226 Difference]: Without dead ends: 696 [2021-12-22 08:34:04,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:34:04,341 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 570 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:04,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1709 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 08:34:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-22 08:34:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2021-12-22 08:34:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.370748299319728) internal successors, (806), 595 states have internal predecessors, (806), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2021-12-22 08:34:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 952 transitions. [2021-12-22 08:34:04,362 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 952 transitions. Word has length 32 [2021-12-22 08:34:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:04,362 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 952 transitions. [2021-12-22 08:34:04,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-12-22 08:34:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 952 transitions. [2021-12-22 08:34:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 08:34:04,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:04,363 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] [2021-12-22 08:34:04,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 08:34:04,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1828011142, now seen corresponding path program 1 times [2021-12-22 08:34:04,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:04,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164735509] [2021-12-22 08:34:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:04,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 08:34:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:04,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:04,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164735509] [2021-12-22 08:34:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164735509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:04,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372249072] [2021-12-22 08:34:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:04,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:04,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:04,414 INFO L87 Difference]: Start difference. First operand 673 states and 952 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-12-22 08:34:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:04,724 INFO L93 Difference]: Finished difference Result 705 states and 991 transitions. [2021-12-22 08:34:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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 33 [2021-12-22 08:34:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:04,727 INFO L225 Difference]: With dead ends: 705 [2021-12-22 08:34:04,727 INFO L226 Difference]: Without dead ends: 690 [2021-12-22 08:34:04,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:04,728 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 322 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:04,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1773 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-22 08:34:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 671. [2021-12-22 08:34:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 587 states have (on average 1.3696763202725724) internal successors, (804), 594 states have internal predecessors, (804), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (84), 54 states have call predecessors, (84), 52 states have call successors, (84) [2021-12-22 08:34:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 948 transitions. [2021-12-22 08:34:04,749 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 948 transitions. Word has length 33 [2021-12-22 08:34:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:04,750 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 948 transitions. [2021-12-22 08:34:04,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-12-22 08:34:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 948 transitions. [2021-12-22 08:34:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 08:34:04,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:04,751 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] [2021-12-22 08:34:04,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 08:34:04,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 997010243, now seen corresponding path program 1 times [2021-12-22 08:34:04,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:04,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029731213] [2021-12-22 08:34:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:04,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 08:34:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:34:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:04,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029731213] [2021-12-22 08:34:04,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029731213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:04,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:04,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:04,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895914129] [2021-12-22 08:34:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:04,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:04,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:04,799 INFO L87 Difference]: Start difference. First operand 671 states and 948 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-22 08:34:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,014 INFO L93 Difference]: Finished difference Result 703 states and 987 transitions. [2021-12-22 08:34:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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 32 [2021-12-22 08:34:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,018 INFO L225 Difference]: With dead ends: 703 [2021-12-22 08:34:05,018 INFO L226 Difference]: Without dead ends: 683 [2021-12-22 08:34:05,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:05,019 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 394 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1477 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-22 08:34:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 664. [2021-12-22 08:34:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 583 states have (on average 1.3704974271012007) internal successors, (799), 590 states have internal predecessors, (799), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (82), 52 states have call predecessors, (82), 50 states have call successors, (82) [2021-12-22 08:34:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 939 transitions. [2021-12-22 08:34:05,043 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 939 transitions. Word has length 32 [2021-12-22 08:34:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,043 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 939 transitions. [2021-12-22 08:34:05,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-22 08:34:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 939 transitions. [2021-12-22 08:34:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 08:34:05,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,045 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] [2021-12-22 08:34:05,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 08:34:05,045 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash -594269975, now seen corresponding path program 1 times [2021-12-22 08:34:05,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664857626] [2021-12-22 08:34:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664857626] [2021-12-22 08:34:05,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664857626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:05,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830559473] [2021-12-22 08:34:05,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:05,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:05,083 INFO L87 Difference]: Start difference. First operand 664 states and 939 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 08:34:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,116 INFO L93 Difference]: Finished difference Result 695 states and 976 transitions. [2021-12-22 08:34:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 30 [2021-12-22 08:34:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,119 INFO L225 Difference]: With dead ends: 695 [2021-12-22 08:34:05,119 INFO L226 Difference]: Without dead ends: 653 [2021-12-22 08:34:05,120 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 [2021-12-22 08:34:05,120 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 87 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 882 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-12-22 08:34:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 648. [2021-12-22 08:34:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 568 states have (on average 1.3626760563380282) internal successors, (774), 575 states have internal predecessors, (774), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 913 transitions. [2021-12-22 08:34:05,142 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 913 transitions. Word has length 30 [2021-12-22 08:34:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,142 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 913 transitions. [2021-12-22 08:34:05,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 08:34:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 913 transitions. [2021-12-22 08:34:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 08:34:05,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,144 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] [2021-12-22 08:34:05,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 08:34:05,144 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash -444205772, now seen corresponding path program 1 times [2021-12-22 08:34:05,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692406750] [2021-12-22 08:34:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692406750] [2021-12-22 08:34:05,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692406750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:34:05,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775979165] [2021-12-22 08:34:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:34:05,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:34:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:34:05,178 INFO L87 Difference]: Start difference. First operand 648 states and 913 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-12-22 08:34:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,225 INFO L93 Difference]: Finished difference Result 684 states and 954 transitions. [2021-12-22 08:34:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:34:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 30 [2021-12-22 08:34:05,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,228 INFO L225 Difference]: With dead ends: 684 [2021-12-22 08:34:05,228 INFO L226 Difference]: Without dead ends: 664 [2021-12-22 08:34:05,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,229 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 27 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1222 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-22 08:34:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 650. [2021-12-22 08:34:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3614035087719298) internal successors, (776), 577 states have internal predecessors, (776), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2021-12-22 08:34:05,247 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 30 [2021-12-22 08:34:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,247 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2021-12-22 08:34:05,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-12-22 08:34:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2021-12-22 08:34:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 08:34:05,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,248 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] [2021-12-22 08:34:05,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 08:34:05,248 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1157172862, now seen corresponding path program 1 times [2021-12-22 08:34:05,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317455376] [2021-12-22 08:34:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317455376] [2021-12-22 08:34:05,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317455376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:34:05,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145622689] [2021-12-22 08:34:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:34:05,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:34:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:34:05,286 INFO L87 Difference]: Start difference. First operand 650 states and 915 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-22 08:34:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,324 INFO L93 Difference]: Finished difference Result 686 states and 956 transitions. [2021-12-22 08:34:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 08:34:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 31 [2021-12-22 08:34:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,326 INFO L225 Difference]: With dead ends: 686 [2021-12-22 08:34:05,326 INFO L226 Difference]: Without dead ends: 666 [2021-12-22 08:34:05,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,328 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 28 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1226 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-22 08:34:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 650. [2021-12-22 08:34:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3614035087719298) internal successors, (776), 577 states have internal predecessors, (776), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2021-12-22 08:34:05,347 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 31 [2021-12-22 08:34:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,347 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2021-12-22 08:34:05,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-22 08:34:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2021-12-22 08:34:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 08:34:05,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,348 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] [2021-12-22 08:34:05,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 08:34:05,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash 791167666, now seen corresponding path program 1 times [2021-12-22 08:34:05,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047375647] [2021-12-22 08:34:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047375647] [2021-12-22 08:34:05,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047375647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:34:05,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510297372] [2021-12-22 08:34:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:34:05,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:34:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:34:05,389 INFO L87 Difference]: Start difference. First operand 650 states and 915 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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) [2021-12-22 08:34:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,591 INFO L93 Difference]: Finished difference Result 911 states and 1284 transitions. [2021-12-22 08:34:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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 34 [2021-12-22 08:34:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,595 INFO L225 Difference]: With dead ends: 911 [2021-12-22 08:34:05,595 INFO L226 Difference]: Without dead ends: 908 [2021-12-22 08:34:05,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,596 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 168 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1137 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-22 08:34:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 729. [2021-12-22 08:34:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 645 states have (on average 1.3705426356589148) internal successors, (884), 653 states have internal predecessors, (884), 60 states have call successors, (60), 24 states have call predecessors, (60), 23 states have return successors, (83), 52 states have call predecessors, (83), 52 states have call successors, (83) [2021-12-22 08:34:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1027 transitions. [2021-12-22 08:34:05,620 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1027 transitions. Word has length 34 [2021-12-22 08:34:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,620 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1027 transitions. [2021-12-22 08:34:05,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 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) [2021-12-22 08:34:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1027 transitions. [2021-12-22 08:34:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 08:34:05,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,621 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] [2021-12-22 08:34:05,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 08:34:05,622 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1366178889, now seen corresponding path program 1 times [2021-12-22 08:34:05,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527914382] [2021-12-22 08:34:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 08:34:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527914382] [2021-12-22 08:34:05,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527914382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:05,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24558776] [2021-12-22 08:34:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:05,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,653 INFO L87 Difference]: Start difference. First operand 729 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-22 08:34:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:05,794 INFO L93 Difference]: Finished difference Result 760 states and 1064 transitions. [2021-12-22 08:34:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:05,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 33 [2021-12-22 08:34:05,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:05,798 INFO L225 Difference]: With dead ends: 760 [2021-12-22 08:34:05,798 INFO L226 Difference]: Without dead ends: 744 [2021-12-22 08:34:05,799 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 [2021-12-22 08:34:05,799 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 85 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:05,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1406 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-22 08:34:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 727. [2021-12-22 08:34:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 644 states have (on average 1.3695652173913044) internal successors, (882), 652 states have internal predecessors, (882), 59 states have call successors, (59), 24 states have call predecessors, (59), 23 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2021-12-22 08:34:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1023 transitions. [2021-12-22 08:34:05,823 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1023 transitions. Word has length 33 [2021-12-22 08:34:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:05,823 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1023 transitions. [2021-12-22 08:34:05,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-22 08:34:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1023 transitions. [2021-12-22 08:34:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 08:34:05,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:05,824 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] [2021-12-22 08:34:05,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 08:34:05,825 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1481962220, now seen corresponding path program 1 times [2021-12-22 08:34:05,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071118141] [2021-12-22 08:34:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:05,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:05,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071118141] [2021-12-22 08:34:05,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071118141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:05,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:05,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:05,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10685768] [2021-12-22 08:34:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:05,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:05,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:05,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:05,883 INFO L87 Difference]: Start difference. First operand 727 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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) [2021-12-22 08:34:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,171 INFO L93 Difference]: Finished difference Result 1202 states and 1654 transitions. [2021-12-22 08:34:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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 35 [2021-12-22 08:34:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,174 INFO L225 Difference]: With dead ends: 1202 [2021-12-22 08:34:06,174 INFO L226 Difference]: Without dead ends: 756 [2021-12-22 08:34:06,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:06,176 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 724 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 941 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-22 08:34:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 718. [2021-12-22 08:34:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 635 states have (on average 1.3559055118110237) internal successors, (861), 643 states have internal predecessors, (861), 59 states have call successors, (59), 24 states have call predecessors, (59), 23 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2021-12-22 08:34:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1002 transitions. [2021-12-22 08:34:06,201 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1002 transitions. Word has length 35 [2021-12-22 08:34:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,201 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1002 transitions. [2021-12-22 08:34:06,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 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) [2021-12-22 08:34:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1002 transitions. [2021-12-22 08:34:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 08:34:06,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,202 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] [2021-12-22 08:34:06,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 08:34:06,202 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1697508356, now seen corresponding path program 1 times [2021-12-22 08:34:06,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855453652] [2021-12-22 08:34:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 08:34:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:06,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855453652] [2021-12-22 08:34:06,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855453652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:06,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:06,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:06,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484367195] [2021-12-22 08:34:06,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:06,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:06,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:06,232 INFO L87 Difference]: Start difference. First operand 718 states and 1002 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-22 08:34:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,384 INFO L93 Difference]: Finished difference Result 749 states and 1039 transitions. [2021-12-22 08:34:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 35 [2021-12-22 08:34:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,387 INFO L225 Difference]: With dead ends: 749 [2021-12-22 08:34:06,387 INFO L226 Difference]: Without dead ends: 733 [2021-12-22 08:34:06,387 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 [2021-12-22 08:34:06,388 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 85 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1393 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-12-22 08:34:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 716. [2021-12-22 08:34:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 634 states have (on average 1.3548895899053628) internal successors, (859), 642 states have internal predecessors, (859), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 998 transitions. [2021-12-22 08:34:06,418 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 998 transitions. Word has length 35 [2021-12-22 08:34:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,418 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 998 transitions. [2021-12-22 08:34:06,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-22 08:34:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 998 transitions. [2021-12-22 08:34:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 08:34:06,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,419 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] [2021-12-22 08:34:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 08:34:06,419 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1261225122, now seen corresponding path program 1 times [2021-12-22 08:34:06,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590156851] [2021-12-22 08:34:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:06,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:06,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590156851] [2021-12-22 08:34:06,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590156851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:06,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:06,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:34:06,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985172971] [2021-12-22 08:34:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:06,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:34:06,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:34:06,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:34:06,448 INFO L87 Difference]: Start difference. First operand 716 states and 998 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-12-22 08:34:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,500 INFO L93 Difference]: Finished difference Result 1123 states and 1555 transitions. [2021-12-22 08:34:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:34:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 37 [2021-12-22 08:34:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,503 INFO L225 Difference]: With dead ends: 1123 [2021-12-22 08:34:06,503 INFO L226 Difference]: Without dead ends: 724 [2021-12-22 08:34:06,504 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 [2021-12-22 08:34:06,504 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 5 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 772 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:34:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-22 08:34:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-12-22 08:34:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 642 states have (on average 1.355140186915888) internal successors, (870), 650 states have internal predecessors, (870), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1009 transitions. [2021-12-22 08:34:06,530 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1009 transitions. Word has length 37 [2021-12-22 08:34:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,530 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1009 transitions. [2021-12-22 08:34:06,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-12-22 08:34:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1009 transitions. [2021-12-22 08:34:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 08:34:06,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,531 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] [2021-12-22 08:34:06,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 08:34:06,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1321718994, now seen corresponding path program 1 times [2021-12-22 08:34:06,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204858298] [2021-12-22 08:34:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 08:34:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:06,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:06,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204858298] [2021-12-22 08:34:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204858298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:06,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:06,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:06,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751576654] [2021-12-22 08:34:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:06,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:06,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:06,567 INFO L87 Difference]: Start difference. First operand 724 states and 1009 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-12-22 08:34:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:06,777 INFO L93 Difference]: Finished difference Result 749 states and 1036 transitions. [2021-12-22 08:34:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:06,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 38 [2021-12-22 08:34:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:06,780 INFO L225 Difference]: With dead ends: 749 [2021-12-22 08:34:06,780 INFO L226 Difference]: Without dead ends: 731 [2021-12-22 08:34:06,781 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 [2021-12-22 08:34:06,781 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 96 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:06,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1718 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-12-22 08:34:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 724. [2021-12-22 08:34:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 642 states have (on average 1.3364485981308412) internal successors, (858), 650 states have internal predecessors, (858), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2021-12-22 08:34:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 997 transitions. [2021-12-22 08:34:06,805 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 997 transitions. Word has length 38 [2021-12-22 08:34:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:06,806 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 997 transitions. [2021-12-22 08:34:06,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-12-22 08:34:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 997 transitions. [2021-12-22 08:34:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 08:34:06,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:06,807 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] [2021-12-22 08:34:06,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 08:34:06,807 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -257120717, now seen corresponding path program 1 times [2021-12-22 08:34:06,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:06,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426312063] [2021-12-22 08:34:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:06,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:06,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426312063] [2021-12-22 08:34:06,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426312063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:06,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:06,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:06,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879168253] [2021-12-22 08:34:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:06,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:06,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:06,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:06,850 INFO L87 Difference]: Start difference. First operand 724 states and 997 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-12-22 08:34:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:07,179 INFO L93 Difference]: Finished difference Result 813 states and 1107 transitions. [2021-12-22 08:34:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 38 [2021-12-22 08:34:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:07,183 INFO L225 Difference]: With dead ends: 813 [2021-12-22 08:34:07,183 INFO L226 Difference]: Without dead ends: 744 [2021-12-22 08:34:07,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-22 08:34:07,184 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 602 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:07,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1159 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-22 08:34:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2021-12-22 08:34:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 649 states have (on average 1.3312788906009245) internal successors, (864), 660 states have internal predecessors, (864), 58 states have call successors, (58), 24 states have call predecessors, (58), 26 states have return successors, (85), 50 states have call predecessors, (85), 50 states have call successors, (85) [2021-12-22 08:34:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1007 transitions. [2021-12-22 08:34:07,209 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1007 transitions. Word has length 38 [2021-12-22 08:34:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:07,209 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1007 transitions. [2021-12-22 08:34:07,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-12-22 08:34:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1007 transitions. [2021-12-22 08:34:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 08:34:07,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:07,211 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] [2021-12-22 08:34:07,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 08:34:07,211 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1774407709, now seen corresponding path program 1 times [2021-12-22 08:34:07,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:07,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434235152] [2021-12-22 08:34:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:07,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 08:34:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:07,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:07,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434235152] [2021-12-22 08:34:07,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434235152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:07,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:07,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:07,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537517498] [2021-12-22 08:34:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:07,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:07,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:07,255 INFO L87 Difference]: Start difference. First operand 734 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 08:34:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:07,486 INFO L93 Difference]: Finished difference Result 754 states and 1027 transitions. [2021-12-22 08:34:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 39 [2021-12-22 08:34:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:07,489 INFO L225 Difference]: With dead ends: 754 [2021-12-22 08:34:07,490 INFO L226 Difference]: Without dead ends: 732 [2021-12-22 08:34:07,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:07,491 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 329 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:07,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1747 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-22 08:34:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 726. [2021-12-22 08:34:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 642 states have (on average 1.3302180685358256) internal successors, (854), 653 states have internal predecessors, (854), 57 states have call successors, (57), 24 states have call predecessors, (57), 26 states have return successors, (84), 49 states have call predecessors, (84), 49 states have call successors, (84) [2021-12-22 08:34:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 995 transitions. [2021-12-22 08:34:07,526 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 995 transitions. Word has length 39 [2021-12-22 08:34:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:07,527 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 995 transitions. [2021-12-22 08:34:07,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 08:34:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 995 transitions. [2021-12-22 08:34:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 08:34:07,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:07,528 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] [2021-12-22 08:34:07,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 08:34:07,529 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 778478368, now seen corresponding path program 1 times [2021-12-22 08:34:07,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:07,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019310589] [2021-12-22 08:34:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:07,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:07,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:07,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019310589] [2021-12-22 08:34:07,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019310589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:07,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:07,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:07,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882408952] [2021-12-22 08:34:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:07,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:07,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:07,568 INFO L87 Difference]: Start difference. First operand 726 states and 995 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 08:34:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:07,782 INFO L93 Difference]: Finished difference Result 793 states and 1071 transitions. [2021-12-22 08:34:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 39 [2021-12-22 08:34:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:07,798 INFO L225 Difference]: With dead ends: 793 [2021-12-22 08:34:07,798 INFO L226 Difference]: Without dead ends: 748 [2021-12-22 08:34:07,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:07,799 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 367 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:07,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1662 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-12-22 08:34:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 713. [2021-12-22 08:34:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 630 states have (on average 1.326984126984127) internal successors, (836), 641 states have internal predecessors, (836), 56 states have call successors, (56), 24 states have call predecessors, (56), 26 states have return successors, (83), 48 states have call predecessors, (83), 48 states have call successors, (83) [2021-12-22 08:34:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 975 transitions. [2021-12-22 08:34:07,839 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 975 transitions. Word has length 39 [2021-12-22 08:34:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:07,840 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 975 transitions. [2021-12-22 08:34:07,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-22 08:34:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 975 transitions. [2021-12-22 08:34:07,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 08:34:07,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:07,841 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] [2021-12-22 08:34:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 08:34:07,841 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1595982943, now seen corresponding path program 1 times [2021-12-22 08:34:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536748351] [2021-12-22 08:34:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:07,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:07,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:07,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536748351] [2021-12-22 08:34:07,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536748351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:07,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:07,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:07,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808225478] [2021-12-22 08:34:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:07,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:07,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:07,880 INFO L87 Difference]: Start difference. First operand 713 states and 975 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-22 08:34:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:08,080 INFO L93 Difference]: Finished difference Result 739 states and 1005 transitions. [2021-12-22 08:34:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:34:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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 39 [2021-12-22 08:34:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:08,083 INFO L225 Difference]: With dead ends: 739 [2021-12-22 08:34:08,083 INFO L226 Difference]: Without dead ends: 716 [2021-12-22 08:34:08,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:08,084 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 58 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:08,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1806 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-22 08:34:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 715. [2021-12-22 08:34:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 631 states have (on average 1.3264659270998416) internal successors, (837), 643 states have internal predecessors, (837), 56 states have call successors, (56), 24 states have call predecessors, (56), 27 states have return successors, (84), 48 states have call predecessors, (84), 48 states have call successors, (84) [2021-12-22 08:34:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 977 transitions. [2021-12-22 08:34:08,110 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 977 transitions. Word has length 39 [2021-12-22 08:34:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 977 transitions. [2021-12-22 08:34:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-22 08:34:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 977 transitions. [2021-12-22 08:34:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 08:34:08,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:08,111 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] [2021-12-22 08:34:08,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 08:34:08,111 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -398634571, now seen corresponding path program 1 times [2021-12-22 08:34:08,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:08,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206820389] [2021-12-22 08:34:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:08,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:08,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:08,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206820389] [2021-12-22 08:34:08,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206820389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:08,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:08,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:08,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795941148] [2021-12-22 08:34:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:08,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:08,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:08,153 INFO L87 Difference]: Start difference. First operand 715 states and 977 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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) [2021-12-22 08:34:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:08,363 INFO L93 Difference]: Finished difference Result 799 states and 1061 transitions. [2021-12-22 08:34:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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 [2021-12-22 08:34:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:08,365 INFO L225 Difference]: With dead ends: 799 [2021-12-22 08:34:08,365 INFO L226 Difference]: Without dead ends: 537 [2021-12-22 08:34:08,366 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 [2021-12-22 08:34:08,366 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 484 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:08,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 950 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-22 08:34:08,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 496. [2021-12-22 08:34:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 434 states have (on average 1.292626728110599) internal successors, (561), 445 states have internal predecessors, (561), 41 states have call successors, (41), 17 states have call predecessors, (41), 20 states have return successors, (48), 34 states have call predecessors, (48), 33 states have call successors, (48) [2021-12-22 08:34:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 650 transitions. [2021-12-22 08:34:08,390 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 650 transitions. Word has length 41 [2021-12-22 08:34:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:08,390 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 650 transitions. [2021-12-22 08:34:08,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 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) [2021-12-22 08:34:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 650 transitions. [2021-12-22 08:34:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 08:34:08,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:08,392 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] [2021-12-22 08:34:08,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 08:34:08,392 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772088, now seen corresponding path program 1 times [2021-12-22 08:34:08,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738006033] [2021-12-22 08:34:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:08,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:08,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738006033] [2021-12-22 08:34:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738006033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:08,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:08,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:34:08,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929671003] [2021-12-22 08:34:08,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:08,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:34:08,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:34:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:34:08,424 INFO L87 Difference]: Start difference. First operand 496 states and 650 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2021-12-22 08:34:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:08,609 INFO L93 Difference]: Finished difference Result 647 states and 845 transitions. [2021-12-22 08:34:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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 [2021-12-22 08:34:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:08,612 INFO L225 Difference]: With dead ends: 647 [2021-12-22 08:34:08,612 INFO L226 Difference]: Without dead ends: 629 [2021-12-22 08:34:08,612 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 [2021-12-22 08:34:08,613 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 183 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:08,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 978 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-12-22 08:34:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 566. [2021-12-22 08:34:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 497 states have (on average 1.2816901408450705) internal successors, (637), 502 states have internal predecessors, (637), 43 states have call successors, (43), 19 states have call predecessors, (43), 25 states have return successors, (61), 45 states have call predecessors, (61), 35 states have call successors, (61) [2021-12-22 08:34:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 741 transitions. [2021-12-22 08:34:08,636 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 741 transitions. Word has length 40 [2021-12-22 08:34:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:08,636 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 741 transitions. [2021-12-22 08:34:08,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 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) [2021-12-22 08:34:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 741 transitions. [2021-12-22 08:34:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 08:34:08,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:08,637 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] [2021-12-22 08:34:08,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 08:34:08,638 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:08,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2126401672, now seen corresponding path program 1 times [2021-12-22 08:34:08,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:08,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191748986] [2021-12-22 08:34:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:08,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:08,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:08,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191748986] [2021-12-22 08:34:08,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191748986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:08,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:08,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:08,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601383442] [2021-12-22 08:34:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:08,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:08,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:08,684 INFO L87 Difference]: Start difference. First operand 566 states and 741 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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) [2021-12-22 08:34:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:08,972 INFO L93 Difference]: Finished difference Result 861 states and 1145 transitions. [2021-12-22 08:34:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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 [2021-12-22 08:34:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:08,975 INFO L225 Difference]: With dead ends: 861 [2021-12-22 08:34:08,975 INFO L226 Difference]: Without dead ends: 562 [2021-12-22 08:34:08,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:08,976 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 457 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:08,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1071 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-22 08:34:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 523. [2021-12-22 08:34:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2860262008733625) internal successors, (589), 470 states have internal predecessors, (589), 42 states have call successors, (42), 18 states have call predecessors, (42), 22 states have return successors, (51), 35 states have call predecessors, (51), 34 states have call successors, (51) [2021-12-22 08:34:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 682 transitions. [2021-12-22 08:34:09,002 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 682 transitions. Word has length 40 [2021-12-22 08:34:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,003 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 682 transitions. [2021-12-22 08:34:09,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 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) [2021-12-22 08:34:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 682 transitions. [2021-12-22 08:34:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 08:34:09,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,004 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] [2021-12-22 08:34:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 08:34:09,004 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1406614257, now seen corresponding path program 1 times [2021-12-22 08:34:09,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177961996] [2021-12-22 08:34:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177961996] [2021-12-22 08:34:09,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177961996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:09,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275087858] [2021-12-22 08:34:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:09,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:09,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:09,053 INFO L87 Difference]: Start difference. First operand 523 states and 682 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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) [2021-12-22 08:34:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:09,353 INFO L93 Difference]: Finished difference Result 549 states and 710 transitions. [2021-12-22 08:34:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 [2021-12-22 08:34:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:09,355 INFO L225 Difference]: With dead ends: 549 [2021-12-22 08:34:09,355 INFO L226 Difference]: Without dead ends: 545 [2021-12-22 08:34:09,356 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 [2021-12-22 08:34:09,356 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 82 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:09,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1964 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-12-22 08:34:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 529. [2021-12-22 08:34:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 464 states have (on average 1.2823275862068966) internal successors, (595), 476 states have internal predecessors, (595), 42 states have call successors, (42), 18 states have call predecessors, (42), 22 states have return successors, (51), 35 states have call predecessors, (51), 34 states have call successors, (51) [2021-12-22 08:34:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 688 transitions. [2021-12-22 08:34:09,380 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 688 transitions. Word has length 41 [2021-12-22 08:34:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,380 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 688 transitions. [2021-12-22 08:34:09,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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) [2021-12-22 08:34:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 688 transitions. [2021-12-22 08:34:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 08:34:09,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,381 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] [2021-12-22 08:34:09,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 08:34:09,381 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1406337427, now seen corresponding path program 1 times [2021-12-22 08:34:09,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138509066] [2021-12-22 08:34:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138509066] [2021-12-22 08:34:09,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138509066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:09,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243153983] [2021-12-22 08:34:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:09,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:09,432 INFO L87 Difference]: Start difference. First operand 529 states and 688 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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) [2021-12-22 08:34:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:09,706 INFO L93 Difference]: Finished difference Result 587 states and 764 transitions. [2021-12-22 08:34:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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 [2021-12-22 08:34:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:09,709 INFO L225 Difference]: With dead ends: 587 [2021-12-22 08:34:09,709 INFO L226 Difference]: Without dead ends: 574 [2021-12-22 08:34:09,709 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 [2021-12-22 08:34:09,709 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 283 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:09,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1883 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-12-22 08:34:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 535. [2021-12-22 08:34:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 469 states have (on average 1.279317697228145) internal successors, (600), 482 states have internal predecessors, (600), 42 states have call successors, (42), 18 states have call predecessors, (42), 23 states have return successors, (58), 35 states have call predecessors, (58), 34 states have call successors, (58) [2021-12-22 08:34:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 700 transitions. [2021-12-22 08:34:09,733 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 700 transitions. Word has length 41 [2021-12-22 08:34:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:09,734 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 700 transitions. [2021-12-22 08:34:09,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 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) [2021-12-22 08:34:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 700 transitions. [2021-12-22 08:34:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 08:34:09,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:09,735 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] [2021-12-22 08:34:09,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 08:34:09,735 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash 188974883, now seen corresponding path program 1 times [2021-12-22 08:34:09,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:09,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243394689] [2021-12-22 08:34:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:09,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 08:34:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:09,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:09,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243394689] [2021-12-22 08:34:09,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243394689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:09,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:09,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:09,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537794102] [2021-12-22 08:34:09,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:09,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:09,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:09,779 INFO L87 Difference]: Start difference. First operand 535 states and 700 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) [2021-12-22 08:34:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,101 INFO L93 Difference]: Finished difference Result 604 states and 784 transitions. [2021-12-22 08:34:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:10,102 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 [2021-12-22 08:34:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,105 INFO L225 Difference]: With dead ends: 604 [2021-12-22 08:34:10,105 INFO L226 Difference]: Without dead ends: 588 [2021-12-22 08:34:10,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:10,107 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 630 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1112 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-12-22 08:34:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-12-22 08:34:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 457 states have (on average 1.2844638949671772) internal successors, (587), 469 states have internal predecessors, (587), 41 states have call successors, (41), 18 states have call predecessors, (41), 22 states have return successors, (50), 34 states have call predecessors, (50), 33 states have call successors, (50) [2021-12-22 08:34:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 678 transitions. [2021-12-22 08:34:10,132 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 678 transitions. Word has length 42 [2021-12-22 08:34:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,132 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 678 transitions. [2021-12-22 08:34:10,132 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) [2021-12-22 08:34:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 678 transitions. [2021-12-22 08:34:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 08:34:10,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,136 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] [2021-12-22 08:34:10,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 08:34:10,136 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1315082489, now seen corresponding path program 1 times [2021-12-22 08:34:10,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085796537] [2021-12-22 08:34:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085796537] [2021-12-22 08:34:10,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085796537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:10,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429082871] [2021-12-22 08:34:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:10,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:10,233 INFO L87 Difference]: Start difference. First operand 521 states and 678 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-12-22 08:34:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,430 INFO L93 Difference]: Finished difference Result 727 states and 955 transitions. [2021-12-22 08:34:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:10,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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 44 [2021-12-22 08:34:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,432 INFO L225 Difference]: With dead ends: 727 [2021-12-22 08:34:10,432 INFO L226 Difference]: Without dead ends: 487 [2021-12-22 08:34:10,433 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 [2021-12-22 08:34:10,433 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 106 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1814 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-22 08:34:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 475. [2021-12-22 08:34:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 417 states have (on average 1.2661870503597121) internal successors, (528), 425 states have internal predecessors, (528), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (45), 33 states have call predecessors, (45), 32 states have call successors, (45) [2021-12-22 08:34:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 612 transitions. [2021-12-22 08:34:10,463 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 612 transitions. Word has length 44 [2021-12-22 08:34:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,464 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 612 transitions. [2021-12-22 08:34:10,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-12-22 08:34:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 612 transitions. [2021-12-22 08:34:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:34:10,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,465 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] [2021-12-22 08:34:10,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 08:34:10,465 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash 817778302, now seen corresponding path program 1 times [2021-12-22 08:34:10,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133588073] [2021-12-22 08:34:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133588073] [2021-12-22 08:34:10,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133588073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:34:10,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834007295] [2021-12-22 08:34:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:34:10,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:34:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:10,514 INFO L87 Difference]: Start difference. First operand 475 states and 612 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-12-22 08:34:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:10,748 INFO L93 Difference]: Finished difference Result 681 states and 884 transitions. [2021-12-22 08:34:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:34:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 46 [2021-12-22 08:34:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:10,750 INFO L225 Difference]: With dead ends: 681 [2021-12-22 08:34:10,750 INFO L226 Difference]: Without dead ends: 487 [2021-12-22 08:34:10,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:10,751 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 408 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:10,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1038 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-22 08:34:10,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 475. [2021-12-22 08:34:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 417 states have (on average 1.2613908872901678) internal successors, (526), 425 states have internal predecessors, (526), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (45), 33 states have call predecessors, (45), 32 states have call successors, (45) [2021-12-22 08:34:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 610 transitions. [2021-12-22 08:34:10,805 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 610 transitions. Word has length 46 [2021-12-22 08:34:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:10,805 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 610 transitions. [2021-12-22 08:34:10,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-12-22 08:34:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 610 transitions. [2021-12-22 08:34:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:34:10,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:10,806 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] [2021-12-22 08:34:10,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 08:34:10,807 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 352065004, now seen corresponding path program 1 times [2021-12-22 08:34:10,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:10,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350200448] [2021-12-22 08:34:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:10,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:34:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:10,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350200448] [2021-12-22 08:34:10,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350200448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:10,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:10,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:10,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541016543] [2021-12-22 08:34:10,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:10,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:10,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:10,853 INFO L87 Difference]: Start difference. First operand 475 states and 610 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-12-22 08:34:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:11,142 INFO L93 Difference]: Finished difference Result 499 states and 635 transitions. [2021-12-22 08:34:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:11,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 46 [2021-12-22 08:34:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:11,146 INFO L225 Difference]: With dead ends: 499 [2021-12-22 08:34:11,146 INFO L226 Difference]: Without dead ends: 483 [2021-12-22 08:34:11,147 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 [2021-12-22 08:34:11,148 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 78 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:11,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1952 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-22 08:34:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 471. [2021-12-22 08:34:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 414 states have (on average 1.2608695652173914) internal successors, (522), 422 states have internal predecessors, (522), 38 states have call successors, (38), 17 states have call predecessors, (38), 18 states have return successors, (44), 32 states have call predecessors, (44), 31 states have call successors, (44) [2021-12-22 08:34:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 604 transitions. [2021-12-22 08:34:11,180 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 604 transitions. Word has length 46 [2021-12-22 08:34:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:11,180 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 604 transitions. [2021-12-22 08:34:11,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-12-22 08:34:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 604 transitions. [2021-12-22 08:34:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:11,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:11,181 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] [2021-12-22 08:34:11,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 08:34:11,182 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:11,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2034962301, now seen corresponding path program 1 times [2021-12-22 08:34:11,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:11,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869840094] [2021-12-22 08:34:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:11,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:11,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:11,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869840094] [2021-12-22 08:34:11,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869840094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:11,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:11,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:11,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668696468] [2021-12-22 08:34:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:11,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:11,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:11,229 INFO L87 Difference]: Start difference. First operand 471 states and 604 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:11,531 INFO L93 Difference]: Finished difference Result 513 states and 648 transitions. [2021-12-22 08:34:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-22 08:34:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:11,533 INFO L225 Difference]: With dead ends: 513 [2021-12-22 08:34:11,533 INFO L226 Difference]: Without dead ends: 491 [2021-12-22 08:34:11,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:11,534 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 171 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:11,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1542 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-22 08:34:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 466. [2021-12-22 08:34:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 411 states have (on average 1.2603406326034063) internal successors, (518), 418 states have internal predecessors, (518), 37 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (43), 32 states have call predecessors, (43), 30 states have call successors, (43) [2021-12-22 08:34:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 598 transitions. [2021-12-22 08:34:11,571 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 598 transitions. Word has length 48 [2021-12-22 08:34:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:11,572 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 598 transitions. [2021-12-22 08:34:11,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 598 transitions. [2021-12-22 08:34:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 08:34:11,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:11,573 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] [2021-12-22 08:34:11,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 08:34:11,573 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155685, now seen corresponding path program 1 times [2021-12-22 08:34:11,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179480154] [2021-12-22 08:34:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:11,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:11,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:11,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179480154] [2021-12-22 08:34:11,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179480154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:11,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:11,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:34:11,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542034647] [2021-12-22 08:34:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:11,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:34:11,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:34:11,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:34:11,611 INFO L87 Difference]: Start difference. First operand 466 states and 598 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-12-22 08:34:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:11,753 INFO L93 Difference]: Finished difference Result 745 states and 956 transitions. [2021-12-22 08:34:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 49 [2021-12-22 08:34:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:11,756 INFO L225 Difference]: With dead ends: 745 [2021-12-22 08:34:11,756 INFO L226 Difference]: Without dead ends: 557 [2021-12-22 08:34:11,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:11,757 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 192 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:11,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 889 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:34:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-22 08:34:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 519. [2021-12-22 08:34:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 459 states have (on average 1.261437908496732) internal successors, (579), 465 states have internal predecessors, (579), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (49), 36 states have call predecessors, (49), 33 states have call successors, (49) [2021-12-22 08:34:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 667 transitions. [2021-12-22 08:34:11,782 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 667 transitions. Word has length 49 [2021-12-22 08:34:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 667 transitions. [2021-12-22 08:34:11,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-12-22 08:34:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 667 transitions. [2021-12-22 08:34:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:11,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:11,784 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] [2021-12-22 08:34:11,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 08:34:11,784 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash 785908469, now seen corresponding path program 1 times [2021-12-22 08:34:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673671565] [2021-12-22 08:34:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:11,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:11,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:11,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673671565] [2021-12-22 08:34:11,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673671565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:11,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:11,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:34:11,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557394713] [2021-12-22 08:34:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:11,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:34:11,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:34:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:34:11,824 INFO L87 Difference]: Start difference. First operand 519 states and 667 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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) [2021-12-22 08:34:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:12,013 INFO L93 Difference]: Finished difference Result 609 states and 774 transitions. [2021-12-22 08:34:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:34:12,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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 [2021-12-22 08:34:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:12,015 INFO L225 Difference]: With dead ends: 609 [2021-12-22 08:34:12,016 INFO L226 Difference]: Without dead ends: 537 [2021-12-22 08:34:12,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:34:12,016 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 74 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:12,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1153 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-22 08:34:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 521. [2021-12-22 08:34:12,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 467 states have internal predecessors, (581), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (49), 36 states have call predecessors, (49), 33 states have call successors, (49) [2021-12-22 08:34:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 669 transitions. [2021-12-22 08:34:12,050 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 669 transitions. Word has length 48 [2021-12-22 08:34:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:12,051 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 669 transitions. [2021-12-22 08:34:12,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 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) [2021-12-22 08:34:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 669 transitions. [2021-12-22 08:34:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 08:34:12,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:12,052 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] [2021-12-22 08:34:12,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 08:34:12,052 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1427465013, now seen corresponding path program 1 times [2021-12-22 08:34:12,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544439955] [2021-12-22 08:34:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:12,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:12,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544439955] [2021-12-22 08:34:12,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544439955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:12,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:12,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:12,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46182395] [2021-12-22 08:34:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:12,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:12,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:12,103 INFO L87 Difference]: Start difference. First operand 521 states and 669 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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) [2021-12-22 08:34:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:12,333 INFO L93 Difference]: Finished difference Result 532 states and 679 transitions. [2021-12-22 08:34:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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 [2021-12-22 08:34:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:12,335 INFO L225 Difference]: With dead ends: 532 [2021-12-22 08:34:12,335 INFO L226 Difference]: Without dead ends: 507 [2021-12-22 08:34:12,336 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 [2021-12-22 08:34:12,336 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 56 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:12,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2005 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-22 08:34:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 504. [2021-12-22 08:34:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 446 states have (on average 1.2600896860986548) internal successors, (562), 451 states have internal predecessors, (562), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2021-12-22 08:34:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 647 transitions. [2021-12-22 08:34:12,361 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 647 transitions. Word has length 48 [2021-12-22 08:34:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:12,361 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 647 transitions. [2021-12-22 08:34:12,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 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) [2021-12-22 08:34:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 647 transitions. [2021-12-22 08:34:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:12,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:12,362 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] [2021-12-22 08:34:12,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 08:34:12,362 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash 827652383, now seen corresponding path program 1 times [2021-12-22 08:34:12,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:12,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800604381] [2021-12-22 08:34:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:12,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800604381] [2021-12-22 08:34:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800604381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:12,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:12,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066910076] [2021-12-22 08:34:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:12,418 INFO L87 Difference]: Start difference. First operand 504 states and 647 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) [2021-12-22 08:34:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:12,642 INFO L93 Difference]: Finished difference Result 766 states and 986 transitions. [2021-12-22 08:34:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:12,643 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 [2021-12-22 08:34:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:12,644 INFO L225 Difference]: With dead ends: 766 [2021-12-22 08:34:12,645 INFO L226 Difference]: Without dead ends: 545 [2021-12-22 08:34:12,645 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 [2021-12-22 08:34:12,646 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 85 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:12,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1879 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-12-22 08:34:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 504. [2021-12-22 08:34:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 446 states have (on average 1.2556053811659194) internal successors, (560), 451 states have internal predecessors, (560), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2021-12-22 08:34:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 645 transitions. [2021-12-22 08:34:12,675 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 645 transitions. Word has length 51 [2021-12-22 08:34:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:12,676 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 645 transitions. [2021-12-22 08:34:12,676 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) [2021-12-22 08:34:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 645 transitions. [2021-12-22 08:34:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:12,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:12,680 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] [2021-12-22 08:34:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 08:34:12,680 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1569541776, now seen corresponding path program 1 times [2021-12-22 08:34:12,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195778815] [2021-12-22 08:34:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:12,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 08:34:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:12,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:12,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195778815] [2021-12-22 08:34:12,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195778815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:12,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:12,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:12,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357271443] [2021-12-22 08:34:12,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:12,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:12,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:12,744 INFO L87 Difference]: Start difference. First operand 504 states and 645 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 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) [2021-12-22 08:34:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:13,048 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-12-22 08:34:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 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 51 [2021-12-22 08:34:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:13,050 INFO L225 Difference]: With dead ends: 535 [2021-12-22 08:34:13,050 INFO L226 Difference]: Without dead ends: 500 [2021-12-22 08:34:13,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:13,051 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 128 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:13,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1769 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-22 08:34:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 487. [2021-12-22 08:34:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 431 states have (on average 1.2436194895591648) internal successors, (536), 436 states have internal predecessors, (536), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (45), 33 states have call predecessors, (45), 31 states have call successors, (45) [2021-12-22 08:34:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 617 transitions. [2021-12-22 08:34:13,075 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 617 transitions. Word has length 51 [2021-12-22 08:34:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:13,075 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 617 transitions. [2021-12-22 08:34:13,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 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) [2021-12-22 08:34:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 617 transitions. [2021-12-22 08:34:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:13,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:13,077 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] [2021-12-22 08:34:13,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 08:34:13,077 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash -838228602, now seen corresponding path program 1 times [2021-12-22 08:34:13,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:13,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001231573] [2021-12-22 08:34:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:13,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 08:34:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:13,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001231573] [2021-12-22 08:34:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001231573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:13,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:13,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:13,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451514795] [2021-12-22 08:34:13,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:13,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:13,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:13,121 INFO L87 Difference]: Start difference. First operand 487 states and 617 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 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) [2021-12-22 08:34:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:13,393 INFO L93 Difference]: Finished difference Result 518 states and 650 transitions. [2021-12-22 08:34:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 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 52 [2021-12-22 08:34:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:13,395 INFO L225 Difference]: With dead ends: 518 [2021-12-22 08:34:13,395 INFO L226 Difference]: Without dead ends: 495 [2021-12-22 08:34:13,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:13,396 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 153 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:13,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1414 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-22 08:34:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 469. [2021-12-22 08:34:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 415 states have (on average 1.2481927710843375) internal successors, (518), 420 states have internal predecessors, (518), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (44), 32 states have call predecessors, (44), 30 states have call successors, (44) [2021-12-22 08:34:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 597 transitions. [2021-12-22 08:34:13,419 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 597 transitions. Word has length 52 [2021-12-22 08:34:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:13,419 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 597 transitions. [2021-12-22 08:34:13,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 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) [2021-12-22 08:34:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 597 transitions. [2021-12-22 08:34:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 08:34:13,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:13,420 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] [2021-12-22 08:34:13,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-22 08:34:13,420 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash 142934411, now seen corresponding path program 1 times [2021-12-22 08:34:13,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:13,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975881030] [2021-12-22 08:34:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:13,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 08:34:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:13,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975881030] [2021-12-22 08:34:13,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975881030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:13,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:13,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:13,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667666864] [2021-12-22 08:34:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:13,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:13,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:13,468 INFO L87 Difference]: Start difference. First operand 469 states and 597 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-12-22 08:34:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:13,781 INFO L93 Difference]: Finished difference Result 496 states and 626 transitions. [2021-12-22 08:34:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:34:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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 51 [2021-12-22 08:34:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:13,783 INFO L225 Difference]: With dead ends: 496 [2021-12-22 08:34:13,783 INFO L226 Difference]: Without dead ends: 477 [2021-12-22 08:34:13,783 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 [2021-12-22 08:34:13,783 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 86 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:13,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1889 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-22 08:34:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 465. [2021-12-22 08:34:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 412 states have (on average 1.2475728155339805) internal successors, (514), 417 states have internal predecessors, (514), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (43), 31 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-22 08:34:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 591 transitions. [2021-12-22 08:34:13,807 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 591 transitions. Word has length 51 [2021-12-22 08:34:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 591 transitions. [2021-12-22 08:34:13,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-12-22 08:34:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 591 transitions. [2021-12-22 08:34:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:13,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:13,809 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] [2021-12-22 08:34:13,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-22 08:34:13,809 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -645897843, now seen corresponding path program 1 times [2021-12-22 08:34:13,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896989104] [2021-12-22 08:34:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:13,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:13,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:13,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896989104] [2021-12-22 08:34:13,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896989104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:13,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:13,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:13,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452397112] [2021-12-22 08:34:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:13,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:13,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:13,858 INFO L87 Difference]: Start difference. First operand 465 states and 591 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,203 INFO L93 Difference]: Finished difference Result 492 states and 620 transitions. [2021-12-22 08:34:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:34:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 52 [2021-12-22 08:34:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,205 INFO L225 Difference]: With dead ends: 492 [2021-12-22 08:34:14,205 INFO L226 Difference]: Without dead ends: 472 [2021-12-22 08:34:14,206 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 [2021-12-22 08:34:14,206 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 86 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1915 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-22 08:34:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 460. [2021-12-22 08:34:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 33 states have call successors, (33), 17 states have call predecessors, (33), 18 states have return successors, (42), 30 states have call predecessors, (42), 28 states have call successors, (42) [2021-12-22 08:34:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 584 transitions. [2021-12-22 08:34:14,243 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 584 transitions. Word has length 52 [2021-12-22 08:34:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:14,243 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 584 transitions. [2021-12-22 08:34:14,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 584 transitions. [2021-12-22 08:34:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:14,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:14,244 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] [2021-12-22 08:34:14,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-22 08:34:14,245 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -403019245, now seen corresponding path program 1 times [2021-12-22 08:34:14,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:14,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273316137] [2021-12-22 08:34:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:14,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:14,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273316137] [2021-12-22 08:34:14,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273316137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:14,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:14,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:14,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609826516] [2021-12-22 08:34:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:14,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:14,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:14,314 INFO L87 Difference]: Start difference. First operand 460 states and 584 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,553 INFO L93 Difference]: Finished difference Result 487 states and 613 transitions. [2021-12-22 08:34:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:34:14,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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 52 [2021-12-22 08:34:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,555 INFO L225 Difference]: With dead ends: 487 [2021-12-22 08:34:14,555 INFO L226 Difference]: Without dead ends: 468 [2021-12-22 08:34:14,555 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 [2021-12-22 08:34:14,556 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 86 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1805 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-22 08:34:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 456. [2021-12-22 08:34:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 405 states have (on average 1.2469135802469136) internal successors, (505), 410 states have internal predecessors, (505), 32 states have call successors, (32), 17 states have call predecessors, (32), 18 states have return successors, (41), 29 states have call predecessors, (41), 27 states have call successors, (41) [2021-12-22 08:34:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 578 transitions. [2021-12-22 08:34:14,578 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 578 transitions. Word has length 52 [2021-12-22 08:34:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:14,578 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 578 transitions. [2021-12-22 08:34:14,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 578 transitions. [2021-12-22 08:34:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 08:34:14,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:14,580 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] [2021-12-22 08:34:14,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-22 08:34:14,580 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 516067612, now seen corresponding path program 1 times [2021-12-22 08:34:14,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604009044] [2021-12-22 08:34:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:14,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 08:34:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:14,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:14,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604009044] [2021-12-22 08:34:14,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604009044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:14,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:14,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:14,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848536119] [2021-12-22 08:34:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:14,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:14,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:14,621 INFO L87 Difference]: Start difference. First operand 456 states and 578 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:14,853 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-12-22 08:34:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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 52 [2021-12-22 08:34:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:14,863 INFO L225 Difference]: With dead ends: 479 [2021-12-22 08:34:14,863 INFO L226 Difference]: Without dead ends: 446 [2021-12-22 08:34:14,863 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 [2021-12-22 08:34:14,867 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 76 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:14,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1642 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-22 08:34:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 434. [2021-12-22 08:34:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 384 states have (on average 1.25) internal successors, (480), 389 states have internal predecessors, (480), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2021-12-22 08:34:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 551 transitions. [2021-12-22 08:34:14,903 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 551 transitions. Word has length 52 [2021-12-22 08:34:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:14,903 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 551 transitions. [2021-12-22 08:34:14,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-12-22 08:34:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 551 transitions. [2021-12-22 08:34:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 08:34:14,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:14,904 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] [2021-12-22 08:34:14,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-22 08:34:14,905 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1195477270, now seen corresponding path program 1 times [2021-12-22 08:34:14,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:14,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699863530] [2021-12-22 08:34:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:14,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:14,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:14,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699863530] [2021-12-22 08:34:14,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699863530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:14,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131710800] [2021-12-22 08:34:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:14,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:14,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:14,989 INFO L87 Difference]: Start difference. First operand 434 states and 551 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-22 08:34:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:15,199 INFO L93 Difference]: Finished difference Result 788 states and 1018 transitions. [2021-12-22 08:34:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:15,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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 54 [2021-12-22 08:34:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:15,201 INFO L225 Difference]: With dead ends: 788 [2021-12-22 08:34:15,201 INFO L226 Difference]: Without dead ends: 578 [2021-12-22 08:34:15,202 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 [2021-12-22 08:34:15,202 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 137 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:15,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1725 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-12-22 08:34:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 434. [2021-12-22 08:34:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 389 states have internal predecessors, (479), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2021-12-22 08:34:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 550 transitions. [2021-12-22 08:34:15,228 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 550 transitions. Word has length 54 [2021-12-22 08:34:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:15,228 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 550 transitions. [2021-12-22 08:34:15,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-22 08:34:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 550 transitions. [2021-12-22 08:34:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 08:34:15,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:15,229 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] [2021-12-22 08:34:15,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-22 08:34:15,230 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1692249118, now seen corresponding path program 1 times [2021-12-22 08:34:15,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:15,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175906303] [2021-12-22 08:34:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:15,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 08:34:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:15,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:15,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175906303] [2021-12-22 08:34:15,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175906303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:15,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:15,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:15,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375457601] [2021-12-22 08:34:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:15,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:15,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:15,280 INFO L87 Difference]: Start difference. First operand 434 states and 550 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-12-22 08:34:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:15,559 INFO L93 Difference]: Finished difference Result 461 states and 579 transitions. [2021-12-22 08:34:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:34:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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 56 [2021-12-22 08:34:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:15,560 INFO L225 Difference]: With dead ends: 461 [2021-12-22 08:34:15,560 INFO L226 Difference]: Without dead ends: 424 [2021-12-22 08:34:15,560 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 [2021-12-22 08:34:15,561 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 94 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:15,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1603 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-22 08:34:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 412. [2021-12-22 08:34:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 365 states have (on average 1.2465753424657535) internal successors, (455), 370 states have internal predecessors, (455), 29 states have call successors, (29), 16 states have call predecessors, (29), 17 states have return successors, (38), 26 states have call predecessors, (38), 24 states have call successors, (38) [2021-12-22 08:34:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 522 transitions. [2021-12-22 08:34:15,587 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 522 transitions. Word has length 56 [2021-12-22 08:34:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:15,588 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 522 transitions. [2021-12-22 08:34:15,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 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) [2021-12-22 08:34:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 522 transitions. [2021-12-22 08:34:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 08:34:15,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:15,589 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] [2021-12-22 08:34:15,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-22 08:34:15,589 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 835021725, now seen corresponding path program 1 times [2021-12-22 08:34:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136545718] [2021-12-22 08:34:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:15,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 08:34:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:15,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136545718] [2021-12-22 08:34:15,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136545718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:15,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:15,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:34:15,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258572876] [2021-12-22 08:34:15,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:15,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:34:15,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:34:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:34:15,637 INFO L87 Difference]: Start difference. First operand 412 states and 522 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-12-22 08:34:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:15,842 INFO L93 Difference]: Finished difference Result 630 states and 796 transitions. [2021-12-22 08:34:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 08:34:15,842 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), 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 62 [2021-12-22 08:34:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:15,843 INFO L225 Difference]: With dead ends: 630 [2021-12-22 08:34:15,843 INFO L226 Difference]: Without dead ends: 399 [2021-12-22 08:34:15,844 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 [2021-12-22 08:34:15,844 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 262 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:15,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 895 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-22 08:34:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 379. [2021-12-22 08:34:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 337 states have (on average 1.2462908011869436) internal successors, (420), 341 states have internal predecessors, (420), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2021-12-22 08:34:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 472 transitions. [2021-12-22 08:34:15,866 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 472 transitions. Word has length 62 [2021-12-22 08:34:15,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:15,866 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 472 transitions. [2021-12-22 08:34:15,866 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), 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) [2021-12-22 08:34:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 472 transitions. [2021-12-22 08:34:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 08:34:15,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:15,867 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] [2021-12-22 08:34:15,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-22 08:34:15,868 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:15,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1658087328, now seen corresponding path program 1 times [2021-12-22 08:34:15,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:15,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620273724] [2021-12-22 08:34:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:15,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 08:34:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:15,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:15,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620273724] [2021-12-22 08:34:15,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620273724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:15,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:15,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 08:34:15,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319888284] [2021-12-22 08:34:15,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:15,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 08:34:15,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 08:34:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:15,940 INFO L87 Difference]: Start difference. First operand 379 states and 472 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-12-22 08:34:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:16,239 INFO L93 Difference]: Finished difference Result 438 states and 542 transitions. [2021-12-22 08:34:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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 66 [2021-12-22 08:34:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:16,242 INFO L225 Difference]: With dead ends: 438 [2021-12-22 08:34:16,243 INFO L226 Difference]: Without dead ends: 419 [2021-12-22 08:34:16,243 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 [2021-12-22 08:34:16,244 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 294 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:16,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 1547 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-22 08:34:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 387. [2021-12-22 08:34:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 344 states have (on average 1.2412790697674418) internal successors, (427), 348 states have internal predecessors, (427), 26 states have call successors, (26), 15 states have call predecessors, (26), 16 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2021-12-22 08:34:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 482 transitions. [2021-12-22 08:34:16,273 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 482 transitions. Word has length 66 [2021-12-22 08:34:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:16,274 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 482 transitions. [2021-12-22 08:34:16,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-12-22 08:34:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 482 transitions. [2021-12-22 08:34:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-22 08:34:16,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:16,278 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, 1, 1] [2021-12-22 08:34:16,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-22 08:34:16,279 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1960160443, now seen corresponding path program 1 times [2021-12-22 08:34:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137471221] [2021-12-22 08:34:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:16,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 08:34:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:16,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137471221] [2021-12-22 08:34:16,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137471221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:16,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:16,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 08:34:16,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548965954] [2021-12-22 08:34:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:16,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 08:34:16,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 08:34:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 08:34:16,335 INFO L87 Difference]: Start difference. First operand 387 states and 482 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:16,740 INFO L93 Difference]: Finished difference Result 792 states and 963 transitions. [2021-12-22 08:34:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2021-12-22 08:34:16,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:16,742 INFO L225 Difference]: With dead ends: 792 [2021-12-22 08:34:16,742 INFO L226 Difference]: Without dead ends: 507 [2021-12-22 08:34:16,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:34:16,743 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 505 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:16,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 1259 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-22 08:34:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 481. [2021-12-22 08:34:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 428 states have (on average 1.2313084112149533) internal successors, (527), 434 states have internal predecessors, (527), 28 states have call successors, (28), 21 states have call predecessors, (28), 24 states have return successors, (31), 26 states have call predecessors, (31), 24 states have call successors, (31) [2021-12-22 08:34:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 586 transitions. [2021-12-22 08:34:16,773 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 586 transitions. Word has length 68 [2021-12-22 08:34:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:16,774 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 586 transitions. [2021-12-22 08:34:16,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 08:34:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 586 transitions. [2021-12-22 08:34:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-22 08:34:16,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:16,776 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, 1] [2021-12-22 08:34:16,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-22 08:34:16,776 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 378634288, now seen corresponding path program 1 times [2021-12-22 08:34:16,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:16,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184191904] [2021-12-22 08:34:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:16,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 08:34:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 08:34:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:16,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:16,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184191904] [2021-12-22 08:34:16,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184191904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:16,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:16,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 08:34:16,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625919623] [2021-12-22 08:34:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:16,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 08:34:16,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 08:34:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:34:16,845 INFO L87 Difference]: Start difference. First operand 481 states and 586 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-12-22 08:34:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:17,116 INFO L93 Difference]: Finished difference Result 520 states and 627 transitions. [2021-12-22 08:34:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 08:34:17,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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 67 [2021-12-22 08:34:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:17,118 INFO L225 Difference]: With dead ends: 520 [2021-12-22 08:34:17,118 INFO L226 Difference]: Without dead ends: 501 [2021-12-22 08:34:17,118 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 [2021-12-22 08:34:17,119 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 160 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:17,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1670 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-22 08:34:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 473. [2021-12-22 08:34:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 421 states have (on average 1.2327790973871735) internal successors, (519), 427 states have internal predecessors, (519), 28 states have call successors, (28), 21 states have call predecessors, (28), 23 states have return successors, (29), 25 states have call predecessors, (29), 24 states have call successors, (29) [2021-12-22 08:34:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 576 transitions. [2021-12-22 08:34:17,155 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 576 transitions. Word has length 67 [2021-12-22 08:34:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:17,155 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 576 transitions. [2021-12-22 08:34:17,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-12-22 08:34:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 576 transitions. [2021-12-22 08:34:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 08:34:17,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:17,156 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, 1, 1, 1] [2021-12-22 08:34:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-22 08:34:17,156 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2018739242, now seen corresponding path program 1 times [2021-12-22 08:34:17,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:17,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461412944] [2021-12-22 08:34:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:17,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 08:34:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 08:34:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 08:34:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:17,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:17,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461412944] [2021-12-22 08:34:17,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461412944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:17,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:17,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 08:34:17,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049614585] [2021-12-22 08:34:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:17,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 08:34:17,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 08:34:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:34:17,227 INFO L87 Difference]: Start difference. First operand 473 states and 576 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 08:34:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:17,638 INFO L93 Difference]: Finished difference Result 476 states and 578 transitions. [2021-12-22 08:34:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 08:34:17,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2021-12-22 08:34:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:17,645 INFO L225 Difference]: With dead ends: 476 [2021-12-22 08:34:17,645 INFO L226 Difference]: Without dead ends: 423 [2021-12-22 08:34:17,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-12-22 08:34:17,645 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 220 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:17,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1461 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 08:34:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-22 08:34:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2021-12-22 08:34:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 374 states have (on average 1.2379679144385027) internal successors, (463), 379 states have internal predecessors, (463), 25 states have call successors, (25), 19 states have call predecessors, (25), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2021-12-22 08:34:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 514 transitions. [2021-12-22 08:34:17,669 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 514 transitions. Word has length 69 [2021-12-22 08:34:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:17,669 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 514 transitions. [2021-12-22 08:34:17,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 08:34:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 514 transitions. [2021-12-22 08:34:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 08:34:17,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:17,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:17,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-22 08:34:17,670 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2014497479, now seen corresponding path program 1 times [2021-12-22 08:34:17,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:17,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904962199] [2021-12-22 08:34:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:17,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:34:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 08:34:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:34:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:34:17,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:34:17,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904962199] [2021-12-22 08:34:17,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904962199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:34:17,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:34:17,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:34:17,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153395674] [2021-12-22 08:34:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:34:17,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:34:17,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:34:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:34:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:34:17,729 INFO L87 Difference]: Start difference. First operand 420 states and 514 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:34:17,985 INFO L93 Difference]: Finished difference Result 578 states and 707 transitions. [2021-12-22 08:34:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:34:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-12-22 08:34:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:34:17,987 INFO L225 Difference]: With dead ends: 578 [2021-12-22 08:34:17,987 INFO L226 Difference]: Without dead ends: 447 [2021-12-22 08:34:17,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-22 08:34:17,988 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 123 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:34:17,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1480 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:34:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-22 08:34:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 431. [2021-12-22 08:34:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 384 states have (on average 1.21875) internal successors, (468), 390 states have internal predecessors, (468), 26 states have call successors, (26), 19 states have call predecessors, (26), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2021-12-22 08:34:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 520 transitions. [2021-12-22 08:34:18,011 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 520 transitions. Word has length 71 [2021-12-22 08:34:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:34:18,011 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 520 transitions. [2021-12-22 08:34:18,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:34:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 520 transitions. [2021-12-22 08:34:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 08:34:18,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:34:18,013 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:18,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-22 08:34:18,013 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:34:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:34:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1484321657, now seen corresponding path program 1 times [2021-12-22 08:34:18,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:34:18,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077909340] [2021-12-22 08:34:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:34:18,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:34:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 08:34:18,024 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 08:34:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 08:34:18,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 08:34:18,078 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 08:34:18,079 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 08:34:18,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-22 08:34:18,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:34:18,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 08:34:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 08:34:18 BoogieIcfgContainer [2021-12-22 08:34:18,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 08:34:18,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 08:34:18,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 08:34:18,186 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 08:34:18,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:01" (3/4) ... [2021-12-22 08:34:18,187 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 08:34:18,270 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 08:34:18,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 08:34:18,270 INFO L158 Benchmark]: Toolchain (without parser) took 17959.78ms. Allocated memory was 90.2MB in the beginning and 264.2MB in the end (delta: 174.1MB). Free memory was 57.3MB in the beginning and 145.7MB in the end (delta: -88.4MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,270 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 08:34:18,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.71ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 75.2MB in the end (delta: -18.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.42ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 68.5MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,271 INFO L158 Benchmark]: Boogie Preprocessor took 62.64ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 64.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,271 INFO L158 Benchmark]: RCFGBuilder took 955.09ms. Allocated memory is still 111.1MB. Free memory was 64.7MB in the beginning and 72.9MB in the end (delta: -8.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,272 INFO L158 Benchmark]: TraceAbstraction took 16383.93ms. Allocated memory was 111.1MB in the beginning and 264.2MB in the end (delta: 153.1MB). Free memory was 72.9MB in the beginning and 165.6MB in the end (delta: -92.7MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,275 INFO L158 Benchmark]: Witness Printer took 84.49ms. Allocated memory is still 264.2MB. Free memory was 165.6MB in the beginning and 145.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-22 08:34:18,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.71ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 75.2MB in the end (delta: -18.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.42ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 68.5MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.64ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 64.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 955.09ms. Allocated memory is still 111.1MB. Free memory was 64.7MB in the beginning and 72.9MB in the end (delta: -8.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16383.93ms. Allocated memory was 111.1MB in the beginning and 264.2MB in the end (delta: 153.1MB). Free memory was 72.9MB in the beginning and 165.6MB in the end (delta: -92.7MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * Witness Printer took 84.49ms. Allocated memory is still 264.2MB. Free memory was 165.6MB in the beginning and 145.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. 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: 1627]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int FloppyThread ; [L43] int KernelMode ; [L44] int Suspended ; [L45] int Executive ; [L46] int DiskController ; [L47] int FloppyDiskPeripheral ; [L48] int FlConfigCallBack ; [L49] int MaximumInterfaceType ; [L50] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L51] int myStatus ; [L52] int s ; [L53] int UNLOADED ; [L54] int NP ; [L55] int DC ; [L56] int SKIP1 ; [L57] int SKIP2 ; [L58] int MPR1 ; [L59] int MPR3 ; [L60] int IPC ; [L61] int pended ; [L62] int compRegistered ; [L63] int lowerDriverReturn ; [L64] int setEventCalled ; [L65] int customIrp ; [L88] int PagingReferenceCount = 0; [L89] 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] [L668] int status ; [L669] int irp = __VERIFIER_nondet_int() ; [L670] int pirp ; [L671] int pirp__IoStatus__Status ; [L672] int irp_choice = __VERIFIER_nondet_int() ; [L673] int devobj = __VERIFIER_nondet_int() ; [L674] int __cil_tmp8 ; [L676] FloppyThread = 0 [L677] KernelMode = 0 [L678] Suspended = 0 [L679] Executive = 0 [L680] DiskController = 0 [L681] FloppyDiskPeripheral = 0 [L682] FlConfigCallBack = 0 [L683] MaximumInterfaceType = 0 [L684] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L685] myStatus = 0 [L686] s = 0 [L687] UNLOADED = 0 [L688] NP = 0 [L689] DC = 0 [L690] SKIP1 = 0 [L691] SKIP2 = 0 [L692] MPR1 = 0 [L693] MPR3 = 0 [L694] IPC = 0 [L695] pended = 0 [L696] compRegistered = 0 [L697] lowerDriverReturn = 0 [L698] setEventCalled = 0 [L699] customIrp = 0 [L703] status = 0 [L704] pirp = irp [L705] CALL _BLAST_init() [L71] UNLOADED = 0 [L72] NP = 1 [L73] DC = 2 [L74] SKIP1 = 3 [L75] SKIP2 = 4 [L76] MPR1 = 5 [L77] MPR3 = 6 [L78] IPC = 7 [L79] s = UNLOADED [L80] pended = 0 [L81] compRegistered = 0 [L82] lowerDriverReturn = 0 [L83] setEventCalled = 0 [L84] 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] [L705] RET _BLAST_init() [L707] COND TRUE status >= 0 [L708] s = NP [L709] customIrp = 0 [L710] setEventCalled = customIrp [L711] lowerDriverReturn = setEventCalled [L712] compRegistered = lowerDriverReturn [L713] pended = compRegistered [L714] pirp__IoStatus__Status = 0 [L715] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L716] COND TRUE irp_choice == 0 [L717] pirp__IoStatus__Status = -1073741637 [L718] myStatus = -1073741637 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L721] CALL stub_driver_init() [L658] s = NP [L659] pended = 0 [L660] compRegistered = 0 [L661] lowerDriverReturn = 0 [L662] setEventCalled = 0 [L663] 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] [L721] RET stub_driver_init() [L724] COND FALSE !(status < 0) [L728] int tmp_ndt_1; [L729] tmp_ndt_1 = __VERIFIER_nondet_int() [L730] COND FALSE !(tmp_ndt_1 == 0) [L733] int tmp_ndt_2; [L734] tmp_ndt_2 = __VERIFIER_nondet_int() [L735] COND FALSE !(tmp_ndt_2 == 1) [L738] int tmp_ndt_3; [L739] tmp_ndt_3 = __VERIFIER_nondet_int() [L740] COND FALSE !(tmp_ndt_3 == 2) [L743] int tmp_ndt_4; [L744] tmp_ndt_4 = __VERIFIER_nondet_int() [L745] COND TRUE tmp_ndt_4 == 3 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L767] CALL, EXPR FloppyPnp(devobj, pirp) [L161] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L162] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L163] int Irp__IoStatus__Information ; [L164] int Irp__IoStatus__Status ; [L165] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L166] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L168] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L169] int disketteExtension__HoldNewRequests ; [L170] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L171] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L173] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L175] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L176] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L177] int irpSp ; [L178] int disketteExtension ; [L179] int ntStatus ; [L180] int doneEvent = __VERIFIER_nondet_int() ; [L181] int irpSp___0 ; [L182] int nextIrpSp ; [L183] int nextIrpSp__Control ; [L184] int irpSp___1 ; [L185] int irpSp__Context ; [L186] int irpSp__Control ; [L187] long __cil_tmp29 ; [L188] long __cil_tmp30 ; [L191] ntStatus = 0 [L192] PagingReferenceCount ++ VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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] [L193] COND TRUE PagingReferenceCount == 1 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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] disketteExtension = DeviceObject__DeviceExtension [L197] irpSp = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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] [L198] COND FALSE !(\read(disketteExtension__IsRemoved)) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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] [L207] COND FALSE !(irpSp__MinorFunction == 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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 TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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] [L236] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, 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=0, 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 FALSE !(! disketteExtension__IsStarted) [L255] disketteExtension__HoldNewRequests = 1 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L256] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) VAL [\old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=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=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L98] int status ; [L99] int threadHandle = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L103] int Irp__IoStatus__Status ; [L104] int Irp__IoStatus__Information ; [L105] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L106] int ObjAttributes = __VERIFIER_nondet_int() ; [L107] int __cil_tmp12 ; [L108] int __cil_tmp13 ; VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, 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=-4, UNLOADED=0] [L111] COND FALSE !(DisketteExtension__PoweringDown == 1) [L117] DisketteExtension__ThreadReferenceCount ++ VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, 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=-4, UNLOADED=0] [L118] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, 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=-4, UNLOADED=0] [L150] COND TRUE pended == 0 [L151] pended = 1 VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, 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=-4, UNLOADED=0] [L157] return (259); VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, \result=259, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, 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=-4, UNLOADED=0] [L256] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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, FlQueueIrpToThread(Irp, disketteExtension)=259, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, 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=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L256] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L259] __cil_tmp29 = (long )ntStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L260] COND TRUE __cil_tmp29 == 259L VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L262-L263] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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] [L1066] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1075] COND FALSE !(customIrp == 1) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1079] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1086] int tmp_ndt_12; [L1087] tmp_ndt_12 = __VERIFIER_nondet_int() [L1088] COND TRUE tmp_ndt_12 == 0 VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_12=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1094] return (0); VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \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=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_12=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L262-L263] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L265] COND FALSE !(disketteExtension__FloppyThread != 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L268] disketteExtension__FloppyThread = 0 [L269] Irp__IoStatus__Status = 0 [L270] myStatus = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L271] COND TRUE s == NP [L272] s = SKIP1 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L279] Irp__CurrentLocation ++ [L280] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L281] 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] [L968] int returnVal2 ; [L969] int compRetStatus1 ; [L970] int lcontext = __VERIFIER_nondet_int() ; [L971] unsigned long __cil_tmp7 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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] [L974] COND FALSE !(\read(compRegistered)) VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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] [L987] int tmp_ndt_10; [L988] tmp_ndt_10 = __VERIFIER_nondet_int() [L989] COND TRUE tmp_ndt_10 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L1000] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L1013] COND FALSE !(s == NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L1017] COND FALSE !(s == MPR1) VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L1026] COND TRUE s == SKIP1 [L1027] s = SKIP2 [L1028] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L1036] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=0, \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=0, KernelMode=0, lcontext=7, 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_10=0, UNLOADED=0] [L281] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L281] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L427] PagingReferenceCount -- VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L428] COND TRUE PagingReferenceCount == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] return (ntStatus); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, 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=0, 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] [L767] RET, EXPR FloppyPnp(devobj, pirp) [L767] status = FloppyPnp(devobj, pirp) [L780] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L781] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L788] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L789] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L796] COND TRUE s != UNLOADED VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L797] COND TRUE status != -1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L798] COND FALSE !(s != SKIP2) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L812] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L813] COND TRUE status != 259 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, 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=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L814] 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] [L1627] 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 8 procedures, 319 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 52, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12144 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11863 mSDsluCounter, 70181 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50802 mSDsCounter, 2029 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17036 IncrementalHoareTripleChecker+Invalid, 19065 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2029 mSolverCounterUnsat, 19379 mSDtfsCounter, 17036 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 544 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=734occurred in iteration=20, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 51 MinimizatonAttempts, 1321 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2234 NumberOfCodeBlocks, 2234 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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! [2021-12-22 08:34:18,307 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