./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/cdaudio_simpl1.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 bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:28:42,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:28:42,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:28:42,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:28:42,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:28:42,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:28:42,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:28:43,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:28:43,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:28:43,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:28:43,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:28:43,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:28:43,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:28:43,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:28:43,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:28:43,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:28:43,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:28:43,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:28:43,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:28:43,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:28:43,029 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:28:43,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:28:43,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:28:43,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:28:43,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:28:43,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:28:43,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:28:43,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:28:43,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:28:43,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:28:43,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:28:43,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:28:43,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:28:43,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:28:43,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:28:43,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:28:43,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:28:43,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:28:43,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:28:43,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:28:43,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:28:43,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:28:43,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:28:43,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:28:43,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:28:43,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:28:43,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:28:43,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:28:43,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:28:43,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:28:43,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:28:43,095 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:28:43,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:28:43,097 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:28:43,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:28:43,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:28:43,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:28:43,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:28:43,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:28:43,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:28:43,098 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:28:43,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:28:43,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:28:43,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:28:43,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:28:43,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:28:43,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:28:43,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:28:43,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:28:43,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:28:43,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:28:43,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:28:43,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:28:43,101 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:28:43,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:28:43,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:28:43,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2022-07-20 22:28:43,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:28:43,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:28:43,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:28:43,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:28:43,432 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:28:43,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-07-20 22:28:43,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39af5dd8/85feb328c70f43089a5aae35ca8459f0/FLAGbd11118a4 [2022-07-20 22:28:43,972 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:28:43,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-07-20 22:28:44,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39af5dd8/85feb328c70f43089a5aae35ca8459f0/FLAGbd11118a4 [2022-07-20 22:28:44,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39af5dd8/85feb328c70f43089a5aae35ca8459f0 [2022-07-20 22:28:44,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:28:44,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:28:44,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:28:44,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:28:44,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:28:44,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:28:44" (1/1) ... [2022-07-20 22:28:44,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af08651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:44, skipping insertion in model container [2022-07-20 22:28:44,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:28:44" (1/1) ... [2022-07-20 22:28:44,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:28:44,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:28:44,760 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-07-20 22:28:44,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:28:44,926 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:28:44,944 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/cdaudio_simpl1.cil-1.c[2074,2087] [2022-07-20 22:28:45,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:28:45,090 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:28:45,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45 WrapperNode [2022-07-20 22:28:45,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:28:45,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:28:45,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:28:45,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:28:45,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,184 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1583 [2022-07-20 22:28:45,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:28:45,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:28:45,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:28:45,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:28:45,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:28:45,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:28:45,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:28:45,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:28:45,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (1/1) ... [2022-07-20 22:28:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:28:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:28:45,328 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) [2022-07-20 22:28:45,359 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 [2022-07-20 22:28:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-07-20 22:28:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-07-20 22:28:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:28:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-07-20 22:28:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-07-20 22:28:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-20 22:28:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-20 22:28:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-07-20 22:28:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-07-20 22:28:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-20 22:28:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-20 22:28:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-20 22:28:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-20 22:28:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-07-20 22:28:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-07-20 22:28:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-07-20 22:28:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-07-20 22:28:45,378 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-07-20 22:28:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-07-20 22:28:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-20 22:28:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-20 22:28:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:28:45,379 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-20 22:28:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-20 22:28:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-07-20 22:28:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-07-20 22:28:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:28:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:28:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-07-20 22:28:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-07-20 22:28:45,566 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:28:45,568 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:28:45,682 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-07-20 22:28:45,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-07-20 22:28:45,757 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,770 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-20 22:28:45,770 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-20 22:28:45,776 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,776 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,780 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,803 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,816 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,820 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:45,824 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:28:46,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2022-07-20 22:28:46,374 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2022-07-20 22:28:46,374 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2022-07-20 22:28:46,374 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2022-07-20 22:28:46,374 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2022-07-20 22:28:46,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-20 22:28:46,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-20 22:28:46,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2022-07-20 22:28:46,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2022-07-20 22:28:46,405 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:28:46,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:28:46,417 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:28:46,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:28:46 BoogieIcfgContainer [2022-07-20 22:28:46,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:28:46,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:28:46,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:28:46,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:28:46,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:28:44" (1/3) ... [2022-07-20 22:28:46,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6496562d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:28:46, skipping insertion in model container [2022-07-20 22:28:46,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:45" (2/3) ... [2022-07-20 22:28:46,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6496562d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:28:46, skipping insertion in model container [2022-07-20 22:28:46,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:28:46" (3/3) ... [2022-07-20 22:28:46,426 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2022-07-20 22:28:46,438 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:28:46,438 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:28:46,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:28:46,492 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@309386e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c4fb6f7 [2022-07-20 22:28:46,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:28:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 368 states have (on average 1.5081521739130435) internal successors, (555), 387 states have internal predecessors, (555), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2022-07-20 22:28:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 22:28:46,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:46,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:28:46,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618458, now seen corresponding path program 1 times [2022-07-20 22:28:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326388118] [2022-07-20 22:28:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:46,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:46,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:46,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326388118] [2022-07-20 22:28:46,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326388118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:46,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:46,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851030520] [2022-07-20 22:28:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:46,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:46,736 INFO L87 Difference]: Start difference. First operand has 470 states, 368 states have (on average 1.5081521739130435) internal successors, (555), 387 states have internal predecessors, (555), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) 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) [2022-07-20 22:28:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:46,944 INFO L93 Difference]: Finished difference Result 813 states and 1302 transitions. [2022-07-20 22:28:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:46,947 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 [2022-07-20 22:28:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:46,958 INFO L225 Difference]: With dead ends: 813 [2022-07-20 22:28:46,959 INFO L226 Difference]: Without dead ends: 463 [2022-07-20 22:28:46,965 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:46,968 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 8 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:28:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-20 22:28:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-07-20 22:28:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 363 states have (on average 1.4765840220385675) internal successors, (536), 380 states have internal predecessors, (536), 87 states have call successors, (87), 13 states have call predecessors, (87), 12 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-20 22:28:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 694 transitions. [2022-07-20 22:28:47,058 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 694 transitions. Word has length 13 [2022-07-20 22:28:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:47,058 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 694 transitions. [2022-07-20 22:28:47,059 INFO L496 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) [2022-07-20 22:28:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 694 transitions. [2022-07-20 22:28:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 22:28:47,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:47,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:28:47,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:28:47,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839840, now seen corresponding path program 1 times [2022-07-20 22:28:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140845994] [2022-07-20 22:28:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:47,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:47,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140845994] [2022-07-20 22:28:47,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140845994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:47,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:47,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424704148] [2022-07-20 22:28:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:47,111 INFO L87 Difference]: Start difference. First operand 463 states and 694 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-20 22:28:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:47,270 INFO L93 Difference]: Finished difference Result 708 states and 1039 transitions. [2022-07-20 22:28:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2022-07-20 22:28:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:47,276 INFO L225 Difference]: With dead ends: 708 [2022-07-20 22:28:47,277 INFO L226 Difference]: Without dead ends: 601 [2022-07-20 22:28:47,278 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:47,279 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 569 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:47,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1047 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:28:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-07-20 22:28:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2022-07-20 22:28:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 467 states have (on average 1.436830835117773) internal successors, (671), 470 states have internal predecessors, (671), 93 states have call successors, (93), 21 states have call predecessors, (93), 20 states have return successors, (97), 91 states have call predecessors, (97), 81 states have call successors, (97) [2022-07-20 22:28:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 861 transitions. [2022-07-20 22:28:47,314 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 861 transitions. Word has length 15 [2022-07-20 22:28:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:47,315 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 861 transitions. [2022-07-20 22:28:47,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-20 22:28:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 861 transitions. [2022-07-20 22:28:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-20 22:28:47,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:47,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:28:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:28:47,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1900703522, now seen corresponding path program 1 times [2022-07-20 22:28:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578728473] [2022-07-20 22:28:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:47,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:47,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578728473] [2022-07-20 22:28:47,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578728473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922793284] [2022-07-20 22:28:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:47,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:47,410 INFO L87 Difference]: Start difference. First operand 581 states and 861 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-07-20 22:28:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:47,446 INFO L93 Difference]: Finished difference Result 864 states and 1250 transitions. [2022-07-20 22:28:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 19 [2022-07-20 22:28:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:47,454 INFO L225 Difference]: With dead ends: 864 [2022-07-20 22:28:47,455 INFO L226 Difference]: Without dead ends: 727 [2022-07-20 22:28:47,456 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:47,457 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 608 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:47,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 874 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:28:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-20 22:28:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 689. [2022-07-20 22:28:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 565 states have (on average 1.4336283185840708) internal successors, (810), 564 states have internal predecessors, (810), 94 states have call successors, (94), 26 states have call predecessors, (94), 29 states have return successors, (110), 98 states have call predecessors, (110), 85 states have call successors, (110) [2022-07-20 22:28:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1014 transitions. [2022-07-20 22:28:47,515 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1014 transitions. Word has length 19 [2022-07-20 22:28:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1014 transitions. [2022-07-20 22:28:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-07-20 22:28:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1014 transitions. [2022-07-20 22:28:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 22:28:47,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:47,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:28:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:28:47,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2011147442, now seen corresponding path program 1 times [2022-07-20 22:28:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129288762] [2022-07-20 22:28:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:47,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129288762] [2022-07-20 22:28:47,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129288762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:47,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:47,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144988159] [2022-07-20 22:28:47,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:47,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:47,558 INFO L87 Difference]: Start difference. First operand 689 states and 1014 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-07-20 22:28:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:47,706 INFO L93 Difference]: Finished difference Result 1296 states and 1967 transitions. [2022-07-20 22:28:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21 [2022-07-20 22:28:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:47,716 INFO L225 Difference]: With dead ends: 1296 [2022-07-20 22:28:47,717 INFO L226 Difference]: Without dead ends: 1061 [2022-07-20 22:28:47,719 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:47,727 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 341 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:47,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1631 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:28:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-07-20 22:28:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 821. [2022-07-20 22:28:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 674 states have (on average 1.4347181008902077) internal successors, (967), 672 states have internal predecessors, (967), 107 states have call successors, (107), 34 states have call predecessors, (107), 39 states have return successors, (172), 114 states have call predecessors, (172), 98 states have call successors, (172) [2022-07-20 22:28:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1246 transitions. [2022-07-20 22:28:47,787 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1246 transitions. Word has length 21 [2022-07-20 22:28:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:47,788 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1246 transitions. [2022-07-20 22:28:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-07-20 22:28:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1246 transitions. [2022-07-20 22:28:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-20 22:28:47,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:47,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:28:47,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:28:47,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1977476652, now seen corresponding path program 1 times [2022-07-20 22:28:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652303452] [2022-07-20 22:28:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:47,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:47,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652303452] [2022-07-20 22:28:47,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652303452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:47,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:47,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062878346] [2022-07-20 22:28:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:47,928 INFO L87 Difference]: Start difference. First operand 821 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-07-20 22:28:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:48,331 INFO L93 Difference]: Finished difference Result 1378 states and 2097 transitions. [2022-07-20 22:28:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:28:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 22 [2022-07-20 22:28:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:48,336 INFO L225 Difference]: With dead ends: 1378 [2022-07-20 22:28:48,337 INFO L226 Difference]: Without dead ends: 833 [2022-07-20 22:28:48,338 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:48,339 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1043 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:48,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 865 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-07-20 22:28:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 809. [2022-07-20 22:28:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 664 states have (on average 1.4292168674698795) internal successors, (949), 662 states have internal predecessors, (949), 105 states have call successors, (105), 32 states have call predecessors, (105), 39 states have return successors, (168), 114 states have call predecessors, (168), 96 states have call successors, (168) [2022-07-20 22:28:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1222 transitions. [2022-07-20 22:28:48,376 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1222 transitions. Word has length 22 [2022-07-20 22:28:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:48,377 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1222 transitions. [2022-07-20 22:28:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-07-20 22:28:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1222 transitions. [2022-07-20 22:28:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 22:28:48,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:48,378 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:28:48,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -401986458, now seen corresponding path program 1 times [2022-07-20 22:28:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222395899] [2022-07-20 22:28:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:48,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:48,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222395899] [2022-07-20 22:28:48,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222395899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:48,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:48,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:48,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17276642] [2022-07-20 22:28:48,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:48,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:48,418 INFO L87 Difference]: Start difference. First operand 809 states and 1222 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:28:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:48,481 INFO L93 Difference]: Finished difference Result 812 states and 1224 transitions. [2022-07-20 22:28:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:48,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23 [2022-07-20 22:28:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:48,485 INFO L225 Difference]: With dead ends: 812 [2022-07-20 22:28:48,485 INFO L226 Difference]: Without dead ends: 808 [2022-07-20 22:28:48,486 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:48,487 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 22 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:48,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1258 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:28:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-07-20 22:28:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-07-20 22:28:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 664 states have (on average 1.4262048192771084) internal successors, (947), 661 states have internal predecessors, (947), 104 states have call successors, (104), 32 states have call predecessors, (104), 39 states have return successors, (168), 114 states have call predecessors, (168), 96 states have call successors, (168) [2022-07-20 22:28:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1219 transitions. [2022-07-20 22:28:48,522 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1219 transitions. Word has length 23 [2022-07-20 22:28:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:48,523 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1219 transitions. [2022-07-20 22:28:48,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:28:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1219 transitions. [2022-07-20 22:28:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 22:28:48,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:48,532 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:28:48,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash 18720905, now seen corresponding path program 1 times [2022-07-20 22:28:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:48,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496641531] [2022-07-20 22:28:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:48,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496641531] [2022-07-20 22:28:48,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496641531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:48,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:48,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140554187] [2022-07-20 22:28:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:48,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:48,594 INFO L87 Difference]: Start difference. First operand 808 states and 1219 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:28:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:48,696 INFO L93 Difference]: Finished difference Result 1228 states and 1788 transitions. [2022-07-20 22:28:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:28:48,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-20 22:28:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:48,701 INFO L225 Difference]: With dead ends: 1228 [2022-07-20 22:28:48,701 INFO L226 Difference]: Without dead ends: 812 [2022-07-20 22:28:48,703 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:48,703 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 323 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:48,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1958 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:28:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-20 22:28:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 683. [2022-07-20 22:28:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 560 states have (on average 1.4089285714285715) internal successors, (789), 559 states have internal predecessors, (789), 89 states have call successors, (89), 28 states have call predecessors, (89), 33 states have return successors, (109), 95 states have call predecessors, (109), 81 states have call successors, (109) [2022-07-20 22:28:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 987 transitions. [2022-07-20 22:28:48,735 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 987 transitions. Word has length 28 [2022-07-20 22:28:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:48,736 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 987 transitions. [2022-07-20 22:28:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:28:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 987 transitions. [2022-07-20 22:28:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 22:28:48,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:48,738 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:28:48,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1728135655, now seen corresponding path program 1 times [2022-07-20 22:28:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035737535] [2022-07-20 22:28:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035737535] [2022-07-20 22:28:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035737535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:48,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:48,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974821810] [2022-07-20 22:28:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:48,770 INFO L87 Difference]: Start difference. First operand 683 states and 987 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, (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) [2022-07-20 22:28:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:48,810 INFO L93 Difference]: Finished difference Result 768 states and 1098 transitions. [2022-07-20 22:28:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:48,810 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, (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 29 [2022-07-20 22:28:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:48,814 INFO L225 Difference]: With dead ends: 768 [2022-07-20 22:28:48,814 INFO L226 Difference]: Without dead ends: 748 [2022-07-20 22:28:48,815 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:48,816 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 628 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:48,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 721 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:28:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-07-20 22:28:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 711. [2022-07-20 22:28:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 586 states have (on average 1.418088737201365) internal successors, (831), 592 states have internal predecessors, (831), 89 states have call successors, (89), 29 states have call predecessors, (89), 35 states have return successors, (104), 89 states have call predecessors, (104), 82 states have call successors, (104) [2022-07-20 22:28:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1024 transitions. [2022-07-20 22:28:48,848 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1024 transitions. Word has length 29 [2022-07-20 22:28:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1024 transitions. [2022-07-20 22:28:48,848 INFO L496 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, (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) [2022-07-20 22:28:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1024 transitions. [2022-07-20 22:28:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 22:28:48,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:48,851 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:48,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:28:48,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash -881374565, now seen corresponding path program 1 times [2022-07-20 22:28:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404849120] [2022-07-20 22:28:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 22:28:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:48,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:48,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404849120] [2022-07-20 22:28:48,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404849120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:48,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:48,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358501025] [2022-07-20 22:28:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:48,888 INFO L87 Difference]: Start difference. First operand 711 states and 1024 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 22:28:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:49,124 INFO L93 Difference]: Finished difference Result 1007 states and 1455 transitions. [2022-07-20 22:28:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:28:49,124 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-20 22:28:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:49,129 INFO L225 Difference]: With dead ends: 1007 [2022-07-20 22:28:49,129 INFO L226 Difference]: Without dead ends: 780 [2022-07-20 22:28:49,130 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:49,130 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 254 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:49,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1782 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-20 22:28:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 694. [2022-07-20 22:28:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 571 states have (on average 1.4133099824868651) internal successors, (807), 579 states have internal predecessors, (807), 88 states have call successors, (88), 28 states have call predecessors, (88), 34 states have return successors, (100), 86 states have call predecessors, (100), 81 states have call successors, (100) [2022-07-20 22:28:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 995 transitions. [2022-07-20 22:28:49,163 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 995 transitions. Word has length 35 [2022-07-20 22:28:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:49,164 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 995 transitions. [2022-07-20 22:28:49,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 22:28:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 995 transitions. [2022-07-20 22:28:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 22:28:49,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:49,166 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:49,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:28:49,166 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894041, now seen corresponding path program 1 times [2022-07-20 22:28:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955442797] [2022-07-20 22:28:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:49,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955442797] [2022-07-20 22:28:49,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955442797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:49,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:49,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503160029] [2022-07-20 22:28:49,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:49,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:49,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:49,197 INFO L87 Difference]: Start difference. First operand 694 states and 995 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-07-20 22:28:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:49,433 INFO L93 Difference]: Finished difference Result 754 states and 1071 transitions. [2022-07-20 22:28:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:28:49,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 32 [2022-07-20 22:28:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:49,438 INFO L225 Difference]: With dead ends: 754 [2022-07-20 22:28:49,438 INFO L226 Difference]: Without dead ends: 712 [2022-07-20 22:28:49,438 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:49,439 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 696 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:49,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1109 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-20 22:28:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 694. [2022-07-20 22:28:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 571 states have (on average 1.4098073555166375) internal successors, (805), 579 states have internal predecessors, (805), 88 states have call successors, (88), 28 states have call predecessors, (88), 34 states have return successors, (100), 86 states have call predecessors, (100), 81 states have call successors, (100) [2022-07-20 22:28:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 993 transitions. [2022-07-20 22:28:49,471 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 993 transitions. Word has length 32 [2022-07-20 22:28:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:49,471 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 993 transitions. [2022-07-20 22:28:49,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-07-20 22:28:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 993 transitions. [2022-07-20 22:28:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-20 22:28:49,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:49,473 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:49,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:28:49,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1219758973, now seen corresponding path program 1 times [2022-07-20 22:28:49,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007523298] [2022-07-20 22:28:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-20 22:28:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:49,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:49,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007523298] [2022-07-20 22:28:49,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007523298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:49,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:49,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:49,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800190161] [2022-07-20 22:28:49,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:49,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:49,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:49,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:49,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:49,527 INFO L87 Difference]: Start difference. First operand 694 states and 993 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:28:49,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:49,723 INFO L93 Difference]: Finished difference Result 779 states and 1121 transitions. [2022-07-20 22:28:49,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:28:49,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 36 [2022-07-20 22:28:49,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:49,728 INFO L225 Difference]: With dead ends: 779 [2022-07-20 22:28:49,728 INFO L226 Difference]: Without dead ends: 719 [2022-07-20 22:28:49,729 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:49,729 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 706 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:49,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1259 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-20 22:28:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 683. [2022-07-20 22:28:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 564 states have (on average 1.4113475177304964) internal successors, (796), 572 states have internal predecessors, (796), 86 states have call successors, (86), 26 states have call predecessors, (86), 32 states have return successors, (98), 84 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 980 transitions. [2022-07-20 22:28:49,760 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 980 transitions. Word has length 36 [2022-07-20 22:28:49,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:49,761 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 980 transitions. [2022-07-20 22:28:49,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:28:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 980 transitions. [2022-07-20 22:28:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 22:28:49,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:49,763 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:49,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:28:49,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash 138802018, now seen corresponding path program 1 times [2022-07-20 22:28:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:49,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146856473] [2022-07-20 22:28:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146856473] [2022-07-20 22:28:49,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146856473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:49,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:49,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:28:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210062099] [2022-07-20 22:28:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:49,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:28:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:28:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:28:49,792 INFO L87 Difference]: Start difference. First operand 683 states and 980 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:28:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:49,872 INFO L93 Difference]: Finished difference Result 851 states and 1212 transitions. [2022-07-20 22:28:49,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:28:49,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 34 [2022-07-20 22:28:49,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:49,876 INFO L225 Difference]: With dead ends: 851 [2022-07-20 22:28:49,877 INFO L226 Difference]: Without dead ends: 835 [2022-07-20 22:28:49,877 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:49,878 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 135 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:49,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1375 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:28:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-20 22:28:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 734. [2022-07-20 22:28:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 611 states have (on average 1.386252045826514) internal successors, (847), 612 states have internal predecessors, (847), 86 states have call successors, (86), 26 states have call predecessors, (86), 36 states have return successors, (109), 95 states have call predecessors, (109), 79 states have call successors, (109) [2022-07-20 22:28:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1042 transitions. [2022-07-20 22:28:49,914 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1042 transitions. Word has length 34 [2022-07-20 22:28:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:49,915 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1042 transitions. [2022-07-20 22:28:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:28:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1042 transitions. [2022-07-20 22:28:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 22:28:49,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:49,917 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:49,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:28:49,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash -298326112, now seen corresponding path program 1 times [2022-07-20 22:28:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:49,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3568747] [2022-07-20 22:28:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:49,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3568747] [2022-07-20 22:28:49,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3568747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:49,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:49,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428472635] [2022-07-20 22:28:49,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:49,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:49,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:49,967 INFO L87 Difference]: Start difference. First operand 734 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-07-20 22:28:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:50,208 INFO L93 Difference]: Finished difference Result 762 states and 1073 transitions. [2022-07-20 22:28:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:28:50,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 34 [2022-07-20 22:28:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:50,212 INFO L225 Difference]: With dead ends: 762 [2022-07-20 22:28:50,212 INFO L226 Difference]: Without dead ends: 715 [2022-07-20 22:28:50,212 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:50,213 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 674 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:50,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1105 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-20 22:28:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 705. [2022-07-20 22:28:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3914529914529914) internal successors, (814), 592 states have internal predecessors, (814), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 998 transitions. [2022-07-20 22:28:50,248 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 998 transitions. Word has length 34 [2022-07-20 22:28:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:50,249 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 998 transitions. [2022-07-20 22:28:50,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-07-20 22:28:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 998 transitions. [2022-07-20 22:28:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 22:28:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:50,251 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:28:50,251 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash 452395620, now seen corresponding path program 1 times [2022-07-20 22:28:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457063655] [2022-07-20 22:28:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:50,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457063655] [2022-07-20 22:28:50,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457063655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:50,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:50,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599250909] [2022-07-20 22:28:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:50,291 INFO L87 Difference]: Start difference. First operand 705 states and 998 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-07-20 22:28:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:50,574 INFO L93 Difference]: Finished difference Result 806 states and 1144 transitions. [2022-07-20 22:28:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:28:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 35 [2022-07-20 22:28:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:50,578 INFO L225 Difference]: With dead ends: 806 [2022-07-20 22:28:50,578 INFO L226 Difference]: Without dead ends: 802 [2022-07-20 22:28:50,578 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:50,579 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 747 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:50,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1199 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-07-20 22:28:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 708. [2022-07-20 22:28:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 588 states have (on average 1.3911564625850341) internal successors, (818), 595 states have internal predecessors, (818), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1002 transitions. [2022-07-20 22:28:50,619 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1002 transitions. Word has length 35 [2022-07-20 22:28:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:50,620 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1002 transitions. [2022-07-20 22:28:50,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-07-20 22:28:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1002 transitions. [2022-07-20 22:28:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 22:28:50,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:50,622 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:50,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:28:50,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 452672450, now seen corresponding path program 1 times [2022-07-20 22:28:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:50,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193844283] [2022-07-20 22:28:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193844283] [2022-07-20 22:28:50,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193844283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:50,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:50,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:28:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138603496] [2022-07-20 22:28:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:50,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:28:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:50,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:28:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:28:50,654 INFO L87 Difference]: Start difference. First operand 708 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-07-20 22:28:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:50,737 INFO L93 Difference]: Finished difference Result 721 states and 1015 transitions. [2022-07-20 22:28:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:28:50,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 35 [2022-07-20 22:28:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:50,741 INFO L225 Difference]: With dead ends: 721 [2022-07-20 22:28:50,741 INFO L226 Difference]: Without dead ends: 691 [2022-07-20 22:28:50,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:28:50,742 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 38 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:50,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3207 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:28:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-20 22:28:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-07-20 22:28:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 571 states have (on average 1.3975481611208407) internal successors, (798), 578 states have internal predecessors, (798), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 982 transitions. [2022-07-20 22:28:50,779 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 982 transitions. Word has length 35 [2022-07-20 22:28:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:50,779 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 982 transitions. [2022-07-20 22:28:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-07-20 22:28:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 982 transitions. [2022-07-20 22:28:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-20 22:28:50,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:50,781 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:50,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:28:50,782 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1417116411, now seen corresponding path program 1 times [2022-07-20 22:28:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390538923] [2022-07-20 22:28:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 22:28:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:50,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390538923] [2022-07-20 22:28:50,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390538923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:50,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:50,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:28:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127264838] [2022-07-20 22:28:50,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:50,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:28:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:28:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:28:50,811 INFO L87 Difference]: Start difference. First operand 691 states and 982 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:28:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:51,053 INFO L93 Difference]: Finished difference Result 732 states and 1051 transitions. [2022-07-20 22:28:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:28:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 37 [2022-07-20 22:28:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:51,057 INFO L225 Difference]: With dead ends: 732 [2022-07-20 22:28:51,057 INFO L226 Difference]: Without dead ends: 725 [2022-07-20 22:28:51,058 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:51,058 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 153 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:51,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1553 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-07-20 22:28:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2022-07-20 22:28:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.393162393162393) internal successors, (815), 592 states have internal predecessors, (815), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 999 transitions. [2022-07-20 22:28:51,097 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 999 transitions. Word has length 37 [2022-07-20 22:28:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:51,098 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 999 transitions. [2022-07-20 22:28:51,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:28:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 999 transitions. [2022-07-20 22:28:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 22:28:51,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:51,100 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:51,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:28:51,100 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 607738208, now seen corresponding path program 1 times [2022-07-20 22:28:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192927447] [2022-07-20 22:28:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 22:28:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:51,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:51,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192927447] [2022-07-20 22:28:51,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192927447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:51,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:51,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:28:51,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766466630] [2022-07-20 22:28:51,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:51,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:28:51,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:51,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:28:51,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:28:51,162 INFO L87 Difference]: Start difference. First operand 705 states and 999 transitions. Second operand has 6 states, 6 states have (on average 6.0) 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) [2022-07-20 22:28:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:51,575 INFO L93 Difference]: Finished difference Result 731 states and 1047 transitions. [2022-07-20 22:28:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:28:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) 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 [2022-07-20 22:28:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:51,579 INFO L225 Difference]: With dead ends: 731 [2022-07-20 22:28:51,579 INFO L226 Difference]: Without dead ends: 725 [2022-07-20 22:28:51,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:28:51,580 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 750 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:51,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1884 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-07-20 22:28:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 705. [2022-07-20 22:28:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 585 states have (on average 1.3914529914529914) internal successors, (814), 592 states have internal predecessors, (814), 86 states have call successors, (86), 26 states have call predecessors, (86), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2022-07-20 22:28:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 998 transitions. [2022-07-20 22:28:51,628 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 998 transitions. Word has length 39 [2022-07-20 22:28:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:51,629 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 998 transitions. [2022-07-20 22:28:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) 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) [2022-07-20 22:28:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 998 transitions. [2022-07-20 22:28:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 22:28:51,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:51,631 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:28:51,631 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1973073460, now seen corresponding path program 1 times [2022-07-20 22:28:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38112067] [2022-07-20 22:28:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 22:28:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38112067] [2022-07-20 22:28:51,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38112067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:51,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:51,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:28:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502286731] [2022-07-20 22:28:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:28:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:28:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:28:51,685 INFO L87 Difference]: Start difference. First operand 705 states and 998 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-07-20 22:28:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:52,037 INFO L93 Difference]: Finished difference Result 744 states and 1063 transitions. [2022-07-20 22:28:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:28:52,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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 [2022-07-20 22:28:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:52,041 INFO L225 Difference]: With dead ends: 744 [2022-07-20 22:28:52,041 INFO L226 Difference]: Without dead ends: 712 [2022-07-20 22:28:52,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:28:52,042 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 158 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3977 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:52,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 3977 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-20 22:28:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 696. [2022-07-20 22:28:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 578 states have (on average 1.3737024221453287) internal successors, (794), 585 states have internal predecessors, (794), 84 states have call successors, (84), 26 states have call predecessors, (84), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2022-07-20 22:28:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 974 transitions. [2022-07-20 22:28:52,097 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 974 transitions. Word has length 40 [2022-07-20 22:28:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:52,097 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 974 transitions. [2022-07-20 22:28:52,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 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) [2022-07-20 22:28:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 974 transitions. [2022-07-20 22:28:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 22:28:52,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:52,100 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:28:52,100 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -577176493, now seen corresponding path program 1 times [2022-07-20 22:28:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:52,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338351046] [2022-07-20 22:28:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:28:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:52,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338351046] [2022-07-20 22:28:52,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338351046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:52,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:52,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:28:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203928968] [2022-07-20 22:28:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:52,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:28:52,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:28:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:28:52,141 INFO L87 Difference]: Start difference. First operand 696 states and 974 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 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) [2022-07-20 22:28:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:52,582 INFO L93 Difference]: Finished difference Result 777 states and 1087 transitions. [2022-07-20 22:28:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:28:52,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 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 [2022-07-20 22:28:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:52,586 INFO L225 Difference]: With dead ends: 777 [2022-07-20 22:28:52,586 INFO L226 Difference]: Without dead ends: 741 [2022-07-20 22:28:52,586 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:52,587 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 792 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:52,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1517 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:28:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-07-20 22:28:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 696. [2022-07-20 22:28:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 578 states have (on average 1.3719723183391004) internal successors, (793), 585 states have internal predecessors, (793), 84 states have call successors, (84), 26 states have call predecessors, (84), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2022-07-20 22:28:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 973 transitions. [2022-07-20 22:28:52,632 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 973 transitions. Word has length 41 [2022-07-20 22:28:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:52,632 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 973 transitions. [2022-07-20 22:28:52,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 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) [2022-07-20 22:28:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 973 transitions. [2022-07-20 22:28:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:28:52,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:52,634 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:28:52,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1220210391, now seen corresponding path program 1 times [2022-07-20 22:28:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:52,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970468226] [2022-07-20 22:28:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:28:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:28:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:52,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:52,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970468226] [2022-07-20 22:28:52,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970468226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:52,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:52,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:28:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024584211] [2022-07-20 22:28:52,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:28:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:28:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:28:52,667 INFO L87 Difference]: Start difference. First operand 696 states and 973 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:53,076 INFO L93 Difference]: Finished difference Result 906 states and 1276 transitions. [2022-07-20 22:28:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:28:53,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-07-20 22:28:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:53,080 INFO L225 Difference]: With dead ends: 906 [2022-07-20 22:28:53,080 INFO L226 Difference]: Without dead ends: 688 [2022-07-20 22:28:53,081 INFO L412 NwaCegarLoop]: 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 [2022-07-20 22:28:53,082 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 252 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:53,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1799 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-07-20 22:28:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 672. [2022-07-20 22:28:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 557 states have (on average 1.3698384201077198) internal successors, (763), 563 states have internal predecessors, (763), 83 states have call successors, (83), 26 states have call predecessors, (83), 31 states have return successors, (94), 82 states have call predecessors, (94), 77 states have call successors, (94) [2022-07-20 22:28:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 940 transitions. [2022-07-20 22:28:53,129 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 940 transitions. Word has length 43 [2022-07-20 22:28:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:53,129 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 940 transitions. [2022-07-20 22:28:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 940 transitions. [2022-07-20 22:28:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:28:53,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:53,132 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:28:53,132 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1828304678, now seen corresponding path program 1 times [2022-07-20 22:28:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:53,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904788920] [2022-07-20 22:28:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:28:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:28:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904788920] [2022-07-20 22:28:53,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904788920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:53,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:53,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 22:28:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008947738] [2022-07-20 22:28:53,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:53,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 22:28:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:53,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 22:28:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:28:53,263 INFO L87 Difference]: Start difference. First operand 672 states and 940 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:53,982 INFO L93 Difference]: Finished difference Result 702 states and 994 transitions. [2022-07-20 22:28:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 22:28:53,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 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 43 [2022-07-20 22:28:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:53,985 INFO L225 Difference]: With dead ends: 702 [2022-07-20 22:28:53,985 INFO L226 Difference]: Without dead ends: 686 [2022-07-20 22:28:53,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:28:53,987 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 98 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:53,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 4461 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:28:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-20 22:28:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 670. [2022-07-20 22:28:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 556 states have (on average 1.368705035971223) internal successors, (761), 562 states have internal predecessors, (761), 82 states have call successors, (82), 26 states have call predecessors, (82), 31 states have return successors, (93), 81 states have call predecessors, (93), 76 states have call successors, (93) [2022-07-20 22:28:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 936 transitions. [2022-07-20 22:28:54,029 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 936 transitions. Word has length 43 [2022-07-20 22:28:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:54,029 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 936 transitions. [2022-07-20 22:28:54,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 936 transitions. [2022-07-20 22:28:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-20 22:28:54,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:54,031 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:28:54,031 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1534576112, now seen corresponding path program 1 times [2022-07-20 22:28:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:54,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029138588] [2022-07-20 22:28:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:54,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 22:28:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:28:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029138588] [2022-07-20 22:28:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029138588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:54,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:54,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 22:28:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805295556] [2022-07-20 22:28:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 22:28:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 22:28:54,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:28:54,142 INFO L87 Difference]: Start difference. First operand 670 states and 936 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-07-20 22:28:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:55,052 INFO L93 Difference]: Finished difference Result 722 states and 1014 transitions. [2022-07-20 22:28:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:28:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 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 47 [2022-07-20 22:28:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:55,055 INFO L225 Difference]: With dead ends: 722 [2022-07-20 22:28:55,055 INFO L226 Difference]: Without dead ends: 702 [2022-07-20 22:28:55,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-20 22:28:55,057 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 247 mSDsluCounter, 4106 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:55,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 4703 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:28:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-07-20 22:28:55,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 668. [2022-07-20 22:28:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 555 states have (on average 1.3675675675675676) internal successors, (759), 561 states have internal predecessors, (759), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2022-07-20 22:28:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 932 transitions. [2022-07-20 22:28:55,099 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 932 transitions. Word has length 47 [2022-07-20 22:28:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:55,099 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 932 transitions. [2022-07-20 22:28:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-07-20 22:28:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 932 transitions. [2022-07-20 22:28:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 22:28:55,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:55,101 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:28:55,102 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash 397890919, now seen corresponding path program 1 times [2022-07-20 22:28:55,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:55,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2979118] [2022-07-20 22:28:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:28:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:28:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2979118] [2022-07-20 22:28:55,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2979118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:55,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:55,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 22:28:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661538120] [2022-07-20 22:28:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 22:28:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 22:28:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:28:55,239 INFO L87 Difference]: Start difference. First operand 668 states and 932 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 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) [2022-07-20 22:28:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:56,210 INFO L93 Difference]: Finished difference Result 720 states and 1010 transitions. [2022-07-20 22:28:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:28:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 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 44 [2022-07-20 22:28:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:56,215 INFO L225 Difference]: With dead ends: 720 [2022-07-20 22:28:56,216 INFO L226 Difference]: Without dead ends: 699 [2022-07-20 22:28:56,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-20 22:28:56,217 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 168 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:56,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 5496 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 22:28:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-20 22:28:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 667. [2022-07-20 22:28:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 554 states have (on average 1.3501805054151625) internal successors, (748), 560 states have internal predecessors, (748), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2022-07-20 22:28:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 921 transitions. [2022-07-20 22:28:56,263 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 921 transitions. Word has length 44 [2022-07-20 22:28:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:56,263 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 921 transitions. [2022-07-20 22:28:56,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 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) [2022-07-20 22:28:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 921 transitions. [2022-07-20 22:28:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 22:28:56,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:56,267 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:56,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:28:56,267 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash 117751789, now seen corresponding path program 1 times [2022-07-20 22:28:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:56,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996536911] [2022-07-20 22:28:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-20 22:28:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:28:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:56,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996536911] [2022-07-20 22:28:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996536911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:56,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:56,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 22:28:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889679864] [2022-07-20 22:28:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 22:28:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 22:28:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:28:56,403 INFO L87 Difference]: Start difference. First operand 667 states and 921 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:57,109 INFO L93 Difference]: Finished difference Result 696 states and 974 transitions. [2022-07-20 22:28:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 22:28:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 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 44 [2022-07-20 22:28:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:57,112 INFO L225 Difference]: With dead ends: 696 [2022-07-20 22:28:57,112 INFO L226 Difference]: Without dead ends: 680 [2022-07-20 22:28:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:28:57,113 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 98 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:57,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 4282 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:28:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-20 22:28:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 664. [2022-07-20 22:28:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 558 states have internal predecessors, (745), 80 states have call successors, (80), 26 states have call predecessors, (80), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2022-07-20 22:28:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 916 transitions. [2022-07-20 22:28:57,152 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 916 transitions. Word has length 44 [2022-07-20 22:28:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:57,152 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 916 transitions. [2022-07-20 22:28:57,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 916 transitions. [2022-07-20 22:28:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 22:28:57,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:57,155 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:57,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:28:57,155 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash -914670889, now seen corresponding path program 1 times [2022-07-20 22:28:57,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703608218] [2022-07-20 22:28:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:57,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:28:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:57,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703608218] [2022-07-20 22:28:57,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703608218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:57,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:57,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:28:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391774433] [2022-07-20 22:28:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:28:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:28:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:28:57,216 INFO L87 Difference]: Start difference. First operand 664 states and 916 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 22:28:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:57,642 INFO L93 Difference]: Finished difference Result 735 states and 1013 transitions. [2022-07-20 22:28:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:28:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-20 22:28:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:57,648 INFO L225 Difference]: With dead ends: 735 [2022-07-20 22:28:57,648 INFO L226 Difference]: Without dead ends: 668 [2022-07-20 22:28:57,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-07-20 22:28:57,653 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 235 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:57,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 3684 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-20 22:28:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 652. [2022-07-20 22:28:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 543 states have (on average 1.3443830570902393) internal successors, (730), 549 states have internal predecessors, (730), 77 states have call successors, (77), 26 states have call predecessors, (77), 31 states have return successors, (88), 76 states have call predecessors, (88), 71 states have call successors, (88) [2022-07-20 22:28:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 895 transitions. [2022-07-20 22:28:57,701 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 895 transitions. Word has length 44 [2022-07-20 22:28:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:57,701 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 895 transitions. [2022-07-20 22:28:57,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 22:28:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 895 transitions. [2022-07-20 22:28:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 22:28:57,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:57,704 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:28:57,704 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash -501722536, now seen corresponding path program 1 times [2022-07-20 22:28:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:57,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126461317] [2022-07-20 22:28:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:28:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:28:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126461317] [2022-07-20 22:28:57,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126461317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:57,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:57,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:28:57,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298267827] [2022-07-20 22:28:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:57,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:28:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:28:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:28:57,747 INFO L87 Difference]: Start difference. First operand 652 states and 895 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 22:28:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:58,154 INFO L93 Difference]: Finished difference Result 797 states and 1137 transitions. [2022-07-20 22:28:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:28:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-20 22:28:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:58,160 INFO L225 Difference]: With dead ends: 797 [2022-07-20 22:28:58,160 INFO L226 Difference]: Without dead ends: 703 [2022-07-20 22:28:58,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:28:58,161 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 130 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:58,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 2209 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-07-20 22:28:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 659. [2022-07-20 22:28:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 548 states have (on average 1.344890510948905) internal successors, (737), 555 states have internal predecessors, (737), 78 states have call successors, (78), 26 states have call predecessors, (78), 32 states have return successors, (95), 77 states have call predecessors, (95), 72 states have call successors, (95) [2022-07-20 22:28:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 910 transitions. [2022-07-20 22:28:58,203 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 910 transitions. Word has length 45 [2022-07-20 22:28:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:58,204 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 910 transitions. [2022-07-20 22:28:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 22:28:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 910 transitions. [2022-07-20 22:28:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 22:28:58,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:58,210 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:58,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:28:58,210 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1011195626, now seen corresponding path program 1 times [2022-07-20 22:28:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:58,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404556974] [2022-07-20 22:28:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:28:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:28:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:58,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404556974] [2022-07-20 22:28:58,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404556974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:58,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:58,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:28:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528792822] [2022-07-20 22:28:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:58,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:28:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:28:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:28:58,273 INFO L87 Difference]: Start difference. First operand 659 states and 910 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 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) [2022-07-20 22:28:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:58,689 INFO L93 Difference]: Finished difference Result 697 states and 978 transitions. [2022-07-20 22:28:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:28:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 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 45 [2022-07-20 22:28:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:58,693 INFO L225 Difference]: With dead ends: 697 [2022-07-20 22:28:58,693 INFO L226 Difference]: Without dead ends: 677 [2022-07-20 22:28:58,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:28:58,694 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 245 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:58,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 3425 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:28:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-07-20 22:28:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2022-07-20 22:28:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 547 states have (on average 1.3436928702010968) internal successors, (735), 554 states have internal predecessors, (735), 77 states have call successors, (77), 26 states have call predecessors, (77), 32 states have return successors, (94), 76 states have call predecessors, (94), 71 states have call successors, (94) [2022-07-20 22:28:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 906 transitions. [2022-07-20 22:28:58,741 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 906 transitions. Word has length 45 [2022-07-20 22:28:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:58,741 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 906 transitions. [2022-07-20 22:28:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 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) [2022-07-20 22:28:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 906 transitions. [2022-07-20 22:28:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 22:28:58,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:58,743 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:28:58,744 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1504244121, now seen corresponding path program 1 times [2022-07-20 22:28:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:58,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149375752] [2022-07-20 22:28:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:28:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149375752] [2022-07-20 22:28:58,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149375752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:58,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:58,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:28:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845161672] [2022-07-20 22:28:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:28:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:28:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:28:58,796 INFO L87 Difference]: Start difference. First operand 657 states and 906 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2022-07-20 22:28:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:59,091 INFO L93 Difference]: Finished difference Result 704 states and 988 transitions. [2022-07-20 22:28:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:28:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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 45 [2022-07-20 22:28:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:59,096 INFO L225 Difference]: With dead ends: 704 [2022-07-20 22:28:59,096 INFO L226 Difference]: Without dead ends: 669 [2022-07-20 22:28:59,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:28:59,097 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 166 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:59,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 3532 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:28:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-20 22:28:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 649. [2022-07-20 22:28:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 541 states have (on average 1.3364140480591498) internal successors, (723), 548 states have internal predecessors, (723), 75 states have call successors, (75), 26 states have call predecessors, (75), 32 states have return successors, (92), 74 states have call predecessors, (92), 69 states have call successors, (92) [2022-07-20 22:28:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 890 transitions. [2022-07-20 22:28:59,134 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 890 transitions. Word has length 45 [2022-07-20 22:28:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:28:59,134 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 890 transitions. [2022-07-20 22:28:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2022-07-20 22:28:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 890 transitions. [2022-07-20 22:28:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-20 22:28:59,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:28:59,137 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:28:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 22:28:59,137 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:28:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:28:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash -945301524, now seen corresponding path program 1 times [2022-07-20 22:28:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:28:59,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32328647] [2022-07-20 22:28:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:28:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:28:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:28:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:28:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:28:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:28:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:28:59,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32328647] [2022-07-20 22:28:59,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32328647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:28:59,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:28:59,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:28:59,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669488541] [2022-07-20 22:28:59,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:28:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 22:28:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:28:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 22:28:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:28:59,261 INFO L87 Difference]: Start difference. First operand 649 states and 890 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:28:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:28:59,972 INFO L93 Difference]: Finished difference Result 684 states and 955 transitions. [2022-07-20 22:28:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 22:28:59,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 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 46 [2022-07-20 22:28:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:28:59,975 INFO L225 Difference]: With dead ends: 684 [2022-07-20 22:28:59,975 INFO L226 Difference]: Without dead ends: 666 [2022-07-20 22:28:59,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:28:59,977 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 110 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:28:59,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 4317 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:28:59,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-20 22:29:00,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 646. [2022-07-20 22:29:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 539 states have (on average 1.3358070500927643) internal successors, (720), 546 states have internal predecessors, (720), 74 states have call successors, (74), 26 states have call predecessors, (74), 32 states have return successors, (91), 73 states have call predecessors, (91), 68 states have call successors, (91) [2022-07-20 22:29:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 885 transitions. [2022-07-20 22:29:00,013 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 885 transitions. Word has length 46 [2022-07-20 22:29:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:00,014 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 885 transitions. [2022-07-20 22:29:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 885 transitions. [2022-07-20 22:29:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-20 22:29:00,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:00,016 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 22:29:00,017 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1146484836, now seen corresponding path program 1 times [2022-07-20 22:29:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310452417] [2022-07-20 22:29:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:00,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 22:29:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:00,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:00,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310452417] [2022-07-20 22:29:00,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310452417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:00,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:00,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525966756] [2022-07-20 22:29:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:00,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:00,086 INFO L87 Difference]: Start difference. First operand 646 states and 885 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-07-20 22:29:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:00,367 INFO L93 Difference]: Finished difference Result 703 states and 992 transitions. [2022-07-20 22:29:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 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 46 [2022-07-20 22:29:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:00,370 INFO L225 Difference]: With dead ends: 703 [2022-07-20 22:29:00,370 INFO L226 Difference]: Without dead ends: 676 [2022-07-20 22:29:00,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:00,371 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 102 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:00,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 2648 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:00,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-07-20 22:29:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 650. [2022-07-20 22:29:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 541 states have (on average 1.33456561922366) internal successors, (722), 550 states have internal predecessors, (722), 74 states have call successors, (74), 26 states have call predecessors, (74), 34 states have return successors, (107), 73 states have call predecessors, (107), 68 states have call successors, (107) [2022-07-20 22:29:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 903 transitions. [2022-07-20 22:29:00,409 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 903 transitions. Word has length 46 [2022-07-20 22:29:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:00,410 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 903 transitions. [2022-07-20 22:29:00,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-07-20 22:29:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 903 transitions. [2022-07-20 22:29:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-20 22:29:00,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:00,412 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 22:29:00,412 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -876237255, now seen corresponding path program 1 times [2022-07-20 22:29:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:00,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793504591] [2022-07-20 22:29:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:00,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793504591] [2022-07-20 22:29:00,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793504591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:00,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:00,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 22:29:00,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485264940] [2022-07-20 22:29:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:00,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 22:29:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 22:29:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:00,558 INFO L87 Difference]: Start difference. First operand 650 states and 903 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:01,320 INFO L93 Difference]: Finished difference Result 685 states and 968 transitions. [2022-07-20 22:29:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:29:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 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 47 [2022-07-20 22:29:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:01,335 INFO L225 Difference]: With dead ends: 685 [2022-07-20 22:29:01,335 INFO L226 Difference]: Without dead ends: 667 [2022-07-20 22:29:01,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:01,336 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 123 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:01,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 4690 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-07-20 22:29:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2022-07-20 22:29:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 539 states have (on average 1.3339517625231911) internal successors, (719), 548 states have internal predecessors, (719), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (106), 72 states have call predecessors, (106), 67 states have call successors, (106) [2022-07-20 22:29:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 898 transitions. [2022-07-20 22:29:01,375 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 898 transitions. Word has length 47 [2022-07-20 22:29:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:01,375 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 898 transitions. [2022-07-20 22:29:01,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 898 transitions. [2022-07-20 22:29:01,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 22:29:01,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:01,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:29:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-20 22:29:01,378 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1600404883, now seen corresponding path program 1 times [2022-07-20 22:29:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:01,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720639218] [2022-07-20 22:29:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-20 22:29:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-20 22:29:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 22:29:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:29:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720639218] [2022-07-20 22:29:01,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720639218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:01,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:01,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:29:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235299248] [2022-07-20 22:29:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:01,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:29:01,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:29:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:01,443 INFO L87 Difference]: Start difference. First operand 647 states and 898 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:01,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:01,958 INFO L93 Difference]: Finished difference Result 1017 states and 1421 transitions. [2022-07-20 22:29:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:01,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 63 [2022-07-20 22:29:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:01,961 INFO L225 Difference]: With dead ends: 1017 [2022-07-20 22:29:01,962 INFO L226 Difference]: Without dead ends: 647 [2022-07-20 22:29:01,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:01,965 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 862 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:01,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1397 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:29:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-07-20 22:29:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-07-20 22:29:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 539 states have (on average 1.3265306122448979) internal successors, (715), 548 states have internal predecessors, (715), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (101), 72 states have call predecessors, (101), 67 states have call successors, (101) [2022-07-20 22:29:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 889 transitions. [2022-07-20 22:29:02,004 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 889 transitions. Word has length 63 [2022-07-20 22:29:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:02,005 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 889 transitions. [2022-07-20 22:29:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 889 transitions. [2022-07-20 22:29:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 22:29:02,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:02,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:29:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-20 22:29:02,007 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -816949344, now seen corresponding path program 1 times [2022-07-20 22:29:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:02,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293388732] [2022-07-20 22:29:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-20 22:29:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-20 22:29:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 22:29:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:29:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:02,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:02,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293388732] [2022-07-20 22:29:02,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293388732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:29:02,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343943034] [2022-07-20 22:29:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:02,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:29:02,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:29:02,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:29:02,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:29:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 22:29:02,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:29:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:02,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 22:29:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:02,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343943034] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 22:29:02,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 22:29:02,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-07-20 22:29:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485026979] [2022-07-20 22:29:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:29:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:29:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:02,674 INFO L87 Difference]: Start difference. First operand 647 states and 889 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:03,014 INFO L93 Difference]: Finished difference Result 935 states and 1273 transitions. [2022-07-20 22:29:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:29:03,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-07-20 22:29:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:03,019 INFO L225 Difference]: With dead ends: 935 [2022-07-20 22:29:03,019 INFO L226 Difference]: Without dead ends: 784 [2022-07-20 22:29:03,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:29:03,020 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 658 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1352 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-07-20 22:29:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 685. [2022-07-20 22:29:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 570 states have (on average 1.3263157894736841) internal successors, (756), 579 states have internal predecessors, (756), 76 states have call successors, (76), 28 states have call predecessors, (76), 38 states have return successors, (107), 77 states have call predecessors, (107), 70 states have call successors, (107) [2022-07-20 22:29:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 939 transitions. [2022-07-20 22:29:03,067 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 939 transitions. Word has length 64 [2022-07-20 22:29:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:03,068 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 939 transitions. [2022-07-20 22:29:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 939 transitions. [2022-07-20 22:29:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 22:29:03,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:03,070 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:03,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 22:29:03,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-20 22:29:03,284 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1640527845, now seen corresponding path program 1 times [2022-07-20 22:29:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832705951] [2022-07-20 22:29:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:03,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:03,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832705951] [2022-07-20 22:29:03,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832705951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:03,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:03,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 22:29:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048453819] [2022-07-20 22:29:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:03,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 22:29:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 22:29:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:29:03,407 INFO L87 Difference]: Start difference. First operand 685 states and 939 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 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) [2022-07-20 22:29:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:04,243 INFO L93 Difference]: Finished difference Result 703 states and 957 transitions. [2022-07-20 22:29:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:29:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 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 48 [2022-07-20 22:29:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:04,246 INFO L225 Difference]: With dead ends: 703 [2022-07-20 22:29:04,246 INFO L226 Difference]: Without dead ends: 683 [2022-07-20 22:29:04,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-07-20 22:29:04,247 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 239 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:04,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 4254 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-07-20 22:29:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-07-20 22:29:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 569 states have (on average 1.3251318101933216) internal successors, (754), 578 states have internal predecessors, (754), 75 states have call successors, (75), 28 states have call predecessors, (75), 38 states have return successors, (106), 76 states have call predecessors, (106), 69 states have call successors, (106) [2022-07-20 22:29:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 935 transitions. [2022-07-20 22:29:04,293 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 935 transitions. Word has length 48 [2022-07-20 22:29:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:04,294 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 935 transitions. [2022-07-20 22:29:04,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 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) [2022-07-20 22:29:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 935 transitions. [2022-07-20 22:29:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 22:29:04,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:04,296 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-20 22:29:04,297 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1335817887, now seen corresponding path program 1 times [2022-07-20 22:29:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:04,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015939336] [2022-07-20 22:29:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:04,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-20 22:29:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:04,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015939336] [2022-07-20 22:29:04,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015939336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:04,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:04,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:29:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949309909] [2022-07-20 22:29:04,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:04,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:29:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:29:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:29:04,333 INFO L87 Difference]: Start difference. First operand 683 states and 935 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 22:29:04,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:04,592 INFO L93 Difference]: Finished difference Result 919 states and 1254 transitions. [2022-07-20 22:29:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:29:04,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2022-07-20 22:29:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:04,600 INFO L225 Difference]: With dead ends: 919 [2022-07-20 22:29:04,600 INFO L226 Difference]: Without dead ends: 641 [2022-07-20 22:29:04,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:29:04,602 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 99 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:04,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1584 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:04,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-20 22:29:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 606. [2022-07-20 22:29:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 509 states have (on average 1.3143418467583496) internal successors, (669), 517 states have internal predecessors, (669), 65 states have call successors, (65), 25 states have call predecessors, (65), 31 states have return successors, (73), 63 states have call predecessors, (73), 59 states have call successors, (73) [2022-07-20 22:29:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 807 transitions. [2022-07-20 22:29:04,641 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 807 transitions. Word has length 48 [2022-07-20 22:29:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:04,641 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 807 transitions. [2022-07-20 22:29:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 22:29:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 807 transitions. [2022-07-20 22:29:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:04,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:04,643 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:04,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-20 22:29:04,644 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1170302788, now seen corresponding path program 1 times [2022-07-20 22:29:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:04,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104705304] [2022-07-20 22:29:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:29:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104705304] [2022-07-20 22:29:04,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104705304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:04,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:04,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 22:29:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264019563] [2022-07-20 22:29:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:04,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 22:29:04,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 22:29:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:04,811 INFO L87 Difference]: Start difference. First operand 606 states and 807 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:05,539 INFO L93 Difference]: Finished difference Result 621 states and 822 transitions. [2022-07-20 22:29:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:29:05,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 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 54 [2022-07-20 22:29:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:05,541 INFO L225 Difference]: With dead ends: 621 [2022-07-20 22:29:05,542 INFO L226 Difference]: Without dead ends: 597 [2022-07-20 22:29:05,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:05,543 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 118 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:05,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 4385 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:29:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-07-20 22:29:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2022-07-20 22:29:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 502 states have (on average 1.3147410358565736) internal successors, (660), 510 states have internal predecessors, (660), 63 states have call successors, (63), 25 states have call predecessors, (63), 31 states have return successors, (71), 61 states have call predecessors, (71), 57 states have call successors, (71) [2022-07-20 22:29:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 794 transitions. [2022-07-20 22:29:05,581 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 794 transitions. Word has length 54 [2022-07-20 22:29:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 794 transitions. [2022-07-20 22:29:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 794 transitions. [2022-07-20 22:29:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 22:29:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:05,584 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-20 22:29:05,584 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1066234985, now seen corresponding path program 1 times [2022-07-20 22:29:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:05,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716335112] [2022-07-20 22:29:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-20 22:29:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716335112] [2022-07-20 22:29:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716335112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:05,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:05,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 22:29:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241294337] [2022-07-20 22:29:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 22:29:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 22:29:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:05,716 INFO L87 Difference]: Start difference. First operand 597 states and 794 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:06,404 INFO L93 Difference]: Finished difference Result 612 states and 809 transitions. [2022-07-20 22:29:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:29:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 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 48 [2022-07-20 22:29:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:06,406 INFO L225 Difference]: With dead ends: 612 [2022-07-20 22:29:06,407 INFO L226 Difference]: Without dead ends: 594 [2022-07-20 22:29:06,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:06,407 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 118 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:06,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 4191 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:29:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-07-20 22:29:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-07-20 22:29:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 500 states have (on average 1.314) internal successors, (657), 508 states have internal predecessors, (657), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-20 22:29:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 789 transitions. [2022-07-20 22:29:06,445 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 789 transitions. Word has length 48 [2022-07-20 22:29:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:06,446 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 789 transitions. [2022-07-20 22:29:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 789 transitions. [2022-07-20 22:29:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 22:29:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:06,448 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-20 22:29:06,448 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1131207190, now seen corresponding path program 1 times [2022-07-20 22:29:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:06,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685384027] [2022-07-20 22:29:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:06,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:29:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:06,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685384027] [2022-07-20 22:29:06,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685384027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:06,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:06,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390151589] [2022-07-20 22:29:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:06,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:06,567 INFO L87 Difference]: Start difference. First operand 594 states and 789 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:07,374 INFO L93 Difference]: Finished difference Result 628 states and 824 transitions. [2022-07-20 22:29:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-07-20 22:29:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:07,376 INFO L225 Difference]: With dead ends: 628 [2022-07-20 22:29:07,376 INFO L226 Difference]: Without dead ends: 608 [2022-07-20 22:29:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:07,378 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 256 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:07,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 4188 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-20 22:29:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 592. [2022-07-20 22:29:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 499 states have (on average 1.312625250501002) internal successors, (655), 507 states have internal predecessors, (655), 61 states have call successors, (61), 25 states have call predecessors, (61), 31 states have return successors, (69), 59 states have call predecessors, (69), 55 states have call successors, (69) [2022-07-20 22:29:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 785 transitions. [2022-07-20 22:29:07,418 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 785 transitions. Word has length 51 [2022-07-20 22:29:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:07,419 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 785 transitions. [2022-07-20 22:29:07,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 785 transitions. [2022-07-20 22:29:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 22:29:07,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:07,421 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:07,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-20 22:29:07,422 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -480998912, now seen corresponding path program 1 times [2022-07-20 22:29:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14160726] [2022-07-20 22:29:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-20 22:29:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-20 22:29:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:07,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:07,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14160726] [2022-07-20 22:29:07,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14160726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:07,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:07,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:07,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487313334] [2022-07-20 22:29:07,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:07,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:07,470 INFO L87 Difference]: Start difference. First operand 592 states and 785 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 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) [2022-07-20 22:29:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:07,814 INFO L93 Difference]: Finished difference Result 674 states and 879 transitions. [2022-07-20 22:29:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 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 50 [2022-07-20 22:29:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:07,816 INFO L225 Difference]: With dead ends: 674 [2022-07-20 22:29:07,816 INFO L226 Difference]: Without dead ends: 648 [2022-07-20 22:29:07,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:29:07,817 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 267 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:07,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2340 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-07-20 22:29:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 598. [2022-07-20 22:29:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 504 states have (on average 1.3115079365079365) internal successors, (661), 512 states have internal predecessors, (661), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-20 22:29:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 793 transitions. [2022-07-20 22:29:07,856 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 793 transitions. Word has length 50 [2022-07-20 22:29:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:07,856 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 793 transitions. [2022-07-20 22:29:07,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 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) [2022-07-20 22:29:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 793 transitions. [2022-07-20 22:29:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 22:29:07,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:07,858 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:07,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-20 22:29:07,859 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash 266979750, now seen corresponding path program 1 times [2022-07-20 22:29:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:07,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784698649] [2022-07-20 22:29:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 22:29:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 22:29:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:29:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:07,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784698649] [2022-07-20 22:29:07,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784698649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:07,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:07,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:29:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110514326] [2022-07-20 22:29:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:07,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:29:07,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:29:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:29:07,915 INFO L87 Difference]: Start difference. First operand 598 states and 793 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 22:29:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:08,246 INFO L93 Difference]: Finished difference Result 703 states and 934 transitions. [2022-07-20 22:29:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:29:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2022-07-20 22:29:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:08,249 INFO L225 Difference]: With dead ends: 703 [2022-07-20 22:29:08,249 INFO L226 Difference]: Without dead ends: 598 [2022-07-20 22:29:08,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:29:08,250 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 113 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:08,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1415 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-20 22:29:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-07-20 22:29:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 504 states have (on average 1.3055555555555556) internal successors, (658), 512 states have internal predecessors, (658), 62 states have call successors, (62), 25 states have call predecessors, (62), 31 states have return successors, (70), 60 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-20 22:29:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 790 transitions. [2022-07-20 22:29:08,289 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 790 transitions. Word has length 53 [2022-07-20 22:29:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:08,290 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 790 transitions. [2022-07-20 22:29:08,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 22:29:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 790 transitions. [2022-07-20 22:29:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-20 22:29:08,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:08,292 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:08,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-20 22:29:08,292 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:08,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1095084481, now seen corresponding path program 1 times [2022-07-20 22:29:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:08,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690020560] [2022-07-20 22:29:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:29:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:08,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690020560] [2022-07-20 22:29:08,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690020560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:08,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:08,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670946981] [2022-07-20 22:29:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:08,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:08,414 INFO L87 Difference]: Start difference. First operand 598 states and 790 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:09,063 INFO L93 Difference]: Finished difference Result 616 states and 808 transitions. [2022-07-20 22:29:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-07-20 22:29:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:09,065 INFO L225 Difference]: With dead ends: 616 [2022-07-20 22:29:09,065 INFO L226 Difference]: Without dead ends: 596 [2022-07-20 22:29:09,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:09,066 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 256 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:09,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 3892 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-07-20 22:29:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2022-07-20 22:29:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 61 states have call successors, (61), 25 states have call predecessors, (61), 31 states have return successors, (69), 59 states have call predecessors, (69), 55 states have call successors, (69) [2022-07-20 22:29:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 786 transitions. [2022-07-20 22:29:09,117 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 786 transitions. Word has length 52 [2022-07-20 22:29:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 786 transitions. [2022-07-20 22:29:09,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 786 transitions. [2022-07-20 22:29:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 22:29:09,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:09,119 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-20 22:29:09,119 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 309046761, now seen corresponding path program 1 times [2022-07-20 22:29:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:09,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651157735] [2022-07-20 22:29:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-20 22:29:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:29:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:09,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651157735] [2022-07-20 22:29:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651157735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:09,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:09,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:29:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208603887] [2022-07-20 22:29:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:09,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:29:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:29:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:29:09,187 INFO L87 Difference]: Start difference. First operand 596 states and 786 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2022-07-20 22:29:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:09,605 INFO L93 Difference]: Finished difference Result 630 states and 826 transitions. [2022-07-20 22:29:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:29:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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 51 [2022-07-20 22:29:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:09,608 INFO L225 Difference]: With dead ends: 630 [2022-07-20 22:29:09,608 INFO L226 Difference]: Without dead ends: 576 [2022-07-20 22:29:09,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:29:09,609 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 266 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:09,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2742 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-07-20 22:29:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 569. [2022-07-20 22:29:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 481 states have (on average 1.288981288981289) internal successors, (620), 489 states have internal predecessors, (620), 56 states have call successors, (56), 25 states have call predecessors, (56), 31 states have return successors, (63), 54 states have call predecessors, (63), 50 states have call successors, (63) [2022-07-20 22:29:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 739 transitions. [2022-07-20 22:29:09,640 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 739 transitions. Word has length 51 [2022-07-20 22:29:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:09,640 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 739 transitions. [2022-07-20 22:29:09,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2022-07-20 22:29:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 739 transitions. [2022-07-20 22:29:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-20 22:29:09,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:09,642 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-20 22:29:09,642 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1614181273, now seen corresponding path program 1 times [2022-07-20 22:29:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:09,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089072777] [2022-07-20 22:29:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-20 22:29:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:29:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089072777] [2022-07-20 22:29:09,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089072777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:09,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:09,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615278501] [2022-07-20 22:29:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:09,691 INFO L87 Difference]: Start difference. First operand 569 states and 739 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 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) [2022-07-20 22:29:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:09,933 INFO L93 Difference]: Finished difference Result 610 states and 781 transitions. [2022-07-20 22:29:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:09,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 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 [2022-07-20 22:29:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:09,936 INFO L225 Difference]: With dead ends: 610 [2022-07-20 22:29:09,936 INFO L226 Difference]: Without dead ends: 563 [2022-07-20 22:29:09,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:09,937 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 179 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:09,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1718 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-20 22:29:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 559. [2022-07-20 22:29:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 473 states have (on average 1.285412262156448) internal successors, (608), 481 states have internal predecessors, (608), 54 states have call successors, (54), 25 states have call predecessors, (54), 31 states have return successors, (61), 52 states have call predecessors, (61), 48 states have call successors, (61) [2022-07-20 22:29:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 723 transitions. [2022-07-20 22:29:09,974 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 723 transitions. Word has length 51 [2022-07-20 22:29:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:09,975 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 723 transitions. [2022-07-20 22:29:09,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 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) [2022-07-20 22:29:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 723 transitions. [2022-07-20 22:29:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-20 22:29:09,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:09,977 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-20 22:29:09,977 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1624287433, now seen corresponding path program 1 times [2022-07-20 22:29:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:09,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390345767] [2022-07-20 22:29:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 22:29:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:10,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:10,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390345767] [2022-07-20 22:29:10,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390345767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:10,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:10,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858759370] [2022-07-20 22:29:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:10,029 INFO L87 Difference]: Start difference. First operand 559 states and 723 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) [2022-07-20 22:29:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:10,278 INFO L93 Difference]: Finished difference Result 586 states and 751 transitions. [2022-07-20 22:29:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:10,280 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 [2022-07-20 22:29:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:10,282 INFO L225 Difference]: With dead ends: 586 [2022-07-20 22:29:10,282 INFO L226 Difference]: Without dead ends: 554 [2022-07-20 22:29:10,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:10,283 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 96 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:10,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1966 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-07-20 22:29:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2022-07-20 22:29:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 469 states have (on average 1.2857142857142858) internal successors, (603), 477 states have internal predecessors, (603), 53 states have call successors, (53), 25 states have call predecessors, (53), 31 states have return successors, (60), 51 states have call predecessors, (60), 47 states have call successors, (60) [2022-07-20 22:29:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 716 transitions. [2022-07-20 22:29:10,308 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 716 transitions. Word has length 52 [2022-07-20 22:29:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:10,308 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 716 transitions. [2022-07-20 22:29:10,308 INFO L496 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) [2022-07-20 22:29:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 716 transitions. [2022-07-20 22:29:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-20 22:29:10,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:10,310 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:10,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-20 22:29:10,310 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 576638373, now seen corresponding path program 1 times [2022-07-20 22:29:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:10,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927645919] [2022-07-20 22:29:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927645919] [2022-07-20 22:29:10,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927645919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:10,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:10,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:29:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401967964] [2022-07-20 22:29:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:29:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:29:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:29:10,352 INFO L87 Difference]: Start difference. First operand 554 states and 716 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 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), 1 states have call successors, (2) [2022-07-20 22:29:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:10,640 INFO L93 Difference]: Finished difference Result 653 states and 844 transitions. [2022-07-20 22:29:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 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), 1 states have call successors, (2) Word has length 52 [2022-07-20 22:29:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:10,643 INFO L225 Difference]: With dead ends: 653 [2022-07-20 22:29:10,643 INFO L226 Difference]: Without dead ends: 641 [2022-07-20 22:29:10,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:10,644 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 216 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:10,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1237 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-20 22:29:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 586. [2022-07-20 22:29:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 499 states have (on average 1.280561122244489) internal successors, (639), 507 states have internal predecessors, (639), 53 states have call successors, (53), 25 states have call predecessors, (53), 33 states have return successors, (62), 53 states have call predecessors, (62), 47 states have call successors, (62) [2022-07-20 22:29:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 754 transitions. [2022-07-20 22:29:10,682 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 754 transitions. Word has length 52 [2022-07-20 22:29:10,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:10,682 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 754 transitions. [2022-07-20 22:29:10,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 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), 1 states have call successors, (2) [2022-07-20 22:29:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 754 transitions. [2022-07-20 22:29:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:29:10,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:10,684 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:10,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-20 22:29:10,684 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:10,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2037022253, now seen corresponding path program 1 times [2022-07-20 22:29:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:10,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752635338] [2022-07-20 22:29:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-20 22:29:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-20 22:29:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:29:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-20 22:29:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752635338] [2022-07-20 22:29:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752635338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:10,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:10,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:29:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769693585] [2022-07-20 22:29:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:29:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:29:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:29:10,747 INFO L87 Difference]: Start difference. First operand 586 states and 754 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:11,062 INFO L93 Difference]: Finished difference Result 716 states and 919 transitions. [2022-07-20 22:29:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:29:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-07-20 22:29:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:11,065 INFO L225 Difference]: With dead ends: 716 [2022-07-20 22:29:11,065 INFO L226 Difference]: Without dead ends: 643 [2022-07-20 22:29:11,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:29:11,065 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 417 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:11,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1304 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-07-20 22:29:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 626. [2022-07-20 22:29:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 533 states have (on average 1.2870544090056286) internal successors, (686), 540 states have internal predecessors, (686), 55 states have call successors, (55), 28 states have call predecessors, (55), 37 states have return successors, (67), 57 states have call predecessors, (67), 50 states have call successors, (67) [2022-07-20 22:29:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 808 transitions. [2022-07-20 22:29:11,108 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 808 transitions. Word has length 56 [2022-07-20 22:29:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:11,108 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 808 transitions. [2022-07-20 22:29:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 808 transitions. [2022-07-20 22:29:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 22:29:11,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:11,110 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:11,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-20 22:29:11,110 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1140697567, now seen corresponding path program 1 times [2022-07-20 22:29:11,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:11,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516025276] [2022-07-20 22:29:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516025276] [2022-07-20 22:29:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516025276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:11,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:11,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079890259] [2022-07-20 22:29:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:11,168 INFO L87 Difference]: Start difference. First operand 626 states and 808 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 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) [2022-07-20 22:29:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:11,681 INFO L93 Difference]: Finished difference Result 687 states and 887 transitions. [2022-07-20 22:29:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:29:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 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 53 [2022-07-20 22:29:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:11,682 INFO L225 Difference]: With dead ends: 687 [2022-07-20 22:29:11,682 INFO L226 Difference]: Without dead ends: 678 [2022-07-20 22:29:11,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:11,683 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 747 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:11,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1443 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:29:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-07-20 22:29:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 626. [2022-07-20 22:29:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 533 states have (on average 1.2833020637898687) internal successors, (684), 540 states have internal predecessors, (684), 55 states have call successors, (55), 28 states have call predecessors, (55), 37 states have return successors, (67), 57 states have call predecessors, (67), 50 states have call successors, (67) [2022-07-20 22:29:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 806 transitions. [2022-07-20 22:29:11,725 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 806 transitions. Word has length 53 [2022-07-20 22:29:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:11,725 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 806 transitions. [2022-07-20 22:29:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 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) [2022-07-20 22:29:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 806 transitions. [2022-07-20 22:29:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-20 22:29:11,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:11,727 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-20 22:29:11,727 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1949554969, now seen corresponding path program 1 times [2022-07-20 22:29:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:11,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790860430] [2022-07-20 22:29:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:29:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 22:29:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:11,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:11,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790860430] [2022-07-20 22:29:11,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790860430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:11,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:11,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172233155] [2022-07-20 22:29:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:11,839 INFO L87 Difference]: Start difference. First operand 626 states and 806 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:12,639 INFO L93 Difference]: Finished difference Result 669 states and 855 transitions. [2022-07-20 22:29:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2022-07-20 22:29:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:12,640 INFO L225 Difference]: With dead ends: 669 [2022-07-20 22:29:12,640 INFO L226 Difference]: Without dead ends: 649 [2022-07-20 22:29:12,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:12,641 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 243 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 4002 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:12,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 4002 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-20 22:29:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 624. [2022-07-20 22:29:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 532 states have (on average 1.281954887218045) internal successors, (682), 539 states have internal predecessors, (682), 54 states have call successors, (54), 28 states have call predecessors, (54), 37 states have return successors, (66), 56 states have call predecessors, (66), 49 states have call successors, (66) [2022-07-20 22:29:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 802 transitions. [2022-07-20 22:29:12,674 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 802 transitions. Word has length 59 [2022-07-20 22:29:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:12,675 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 802 transitions. [2022-07-20 22:29:12,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 802 transitions. [2022-07-20 22:29:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-20 22:29:12,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:12,676 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-20 22:29:12,676 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1478759627, now seen corresponding path program 1 times [2022-07-20 22:29:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:12,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775383923] [2022-07-20 22:29:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-20 22:29:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:12,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:12,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775383923] [2022-07-20 22:29:12,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775383923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:12,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:12,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-20 22:29:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378024596] [2022-07-20 22:29:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:12,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-20 22:29:12,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-20 22:29:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:12,828 INFO L87 Difference]: Start difference. First operand 624 states and 802 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:13,729 INFO L93 Difference]: Finished difference Result 644 states and 823 transitions. [2022-07-20 22:29:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 22:29:13,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-07-20 22:29:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:13,731 INFO L225 Difference]: With dead ends: 644 [2022-07-20 22:29:13,731 INFO L226 Difference]: Without dead ends: 620 [2022-07-20 22:29:13,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-07-20 22:29:13,732 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 232 mSDsluCounter, 3954 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:13,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 4358 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-07-20 22:29:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2022-07-20 22:29:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 529 states have (on average 1.281663516068053) internal successors, (678), 536 states have internal predecessors, (678), 53 states have call successors, (53), 28 states have call predecessors, (53), 37 states have return successors, (65), 55 states have call predecessors, (65), 48 states have call successors, (65) [2022-07-20 22:29:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 796 transitions. [2022-07-20 22:29:13,774 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 796 transitions. Word has length 55 [2022-07-20 22:29:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:13,775 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 796 transitions. [2022-07-20 22:29:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 796 transitions. [2022-07-20 22:29:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:13,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:13,776 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:13,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-20 22:29:13,777 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1059320829, now seen corresponding path program 1 times [2022-07-20 22:29:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:13,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515050696] [2022-07-20 22:29:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:13,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 22:29:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-20 22:29:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:13,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:13,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515050696] [2022-07-20 22:29:13,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515050696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:13,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:13,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54510197] [2022-07-20 22:29:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:13,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:13,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:13,826 INFO L87 Difference]: Start difference. First operand 620 states and 796 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-07-20 22:29:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:14,090 INFO L93 Difference]: Finished difference Result 647 states and 824 transitions. [2022-07-20 22:29:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:14,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 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 54 [2022-07-20 22:29:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:14,092 INFO L225 Difference]: With dead ends: 647 [2022-07-20 22:29:14,092 INFO L226 Difference]: Without dead ends: 615 [2022-07-20 22:29:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:14,092 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 171 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:14,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1642 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-20 22:29:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2022-07-20 22:29:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 525 states have (on average 1.2819047619047619) internal successors, (673), 532 states have internal predecessors, (673), 52 states have call successors, (52), 28 states have call predecessors, (52), 37 states have return successors, (64), 54 states have call predecessors, (64), 47 states have call successors, (64) [2022-07-20 22:29:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 789 transitions. [2022-07-20 22:29:14,133 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 789 transitions. Word has length 54 [2022-07-20 22:29:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:14,133 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 789 transitions. [2022-07-20 22:29:14,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-07-20 22:29:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 789 transitions. [2022-07-20 22:29:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:14,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:14,135 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:14,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-20 22:29:14,135 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1513227889, now seen corresponding path program 1 times [2022-07-20 22:29:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52334684] [2022-07-20 22:29:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:29:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-20 22:29:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:14,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52334684] [2022-07-20 22:29:14,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52334684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:14,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:14,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:29:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127014766] [2022-07-20 22:29:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 22:29:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 22:29:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:29:14,210 INFO L87 Difference]: Start difference. First operand 615 states and 789 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-07-20 22:29:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:14,651 INFO L93 Difference]: Finished difference Result 638 states and 814 transitions. [2022-07-20 22:29:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 22:29:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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 54 [2022-07-20 22:29:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:14,653 INFO L225 Difference]: With dead ends: 638 [2022-07-20 22:29:14,653 INFO L226 Difference]: Without dead ends: 612 [2022-07-20 22:29:14,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:14,654 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 232 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:14,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 3013 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-20 22:29:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2022-07-20 22:29:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 523 states have (on average 1.2810707456978967) internal successors, (670), 530 states have internal predecessors, (670), 51 states have call successors, (51), 28 states have call predecessors, (51), 37 states have return successors, (63), 53 states have call predecessors, (63), 46 states have call successors, (63) [2022-07-20 22:29:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 784 transitions. [2022-07-20 22:29:14,696 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 784 transitions. Word has length 54 [2022-07-20 22:29:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:14,696 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 784 transitions. [2022-07-20 22:29:14,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-07-20 22:29:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 784 transitions. [2022-07-20 22:29:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:14,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:14,697 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:14,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-20 22:29:14,698 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash 362195338, now seen corresponding path program 1 times [2022-07-20 22:29:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:14,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994039333] [2022-07-20 22:29:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:14,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994039333] [2022-07-20 22:29:14,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994039333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:14,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:14,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47637358] [2022-07-20 22:29:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:14,758 INFO L87 Difference]: Start difference. First operand 612 states and 784 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-20 22:29:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:15,191 INFO L93 Difference]: Finished difference Result 668 states and 856 transitions. [2022-07-20 22:29:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 22:29:15,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2022-07-20 22:29:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:15,202 INFO L225 Difference]: With dead ends: 668 [2022-07-20 22:29:15,203 INFO L226 Difference]: Without dead ends: 664 [2022-07-20 22:29:15,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:15,205 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 723 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:15,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1361 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-20 22:29:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 609. [2022-07-20 22:29:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 520 states have (on average 1.2788461538461537) internal successors, (665), 527 states have internal predecessors, (665), 51 states have call successors, (51), 28 states have call predecessors, (51), 37 states have return successors, (63), 53 states have call predecessors, (63), 46 states have call successors, (63) [2022-07-20 22:29:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 779 transitions. [2022-07-20 22:29:15,245 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 779 transitions. Word has length 54 [2022-07-20 22:29:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:15,245 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 779 transitions. [2022-07-20 22:29:15,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-20 22:29:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 779 transitions. [2022-07-20 22:29:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:15,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:15,247 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:15,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-20 22:29:15,247 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash 362472168, now seen corresponding path program 1 times [2022-07-20 22:29:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:15,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719519112] [2022-07-20 22:29:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:15,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:15,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719519112] [2022-07-20 22:29:15,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719519112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:15,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:15,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:29:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048656622] [2022-07-20 22:29:15,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:15,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 22:29:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:15,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 22:29:15,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:29:15,377 INFO L87 Difference]: Start difference. First operand 609 states and 779 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-07-20 22:29:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:16,017 INFO L93 Difference]: Finished difference Result 619 states and 788 transitions. [2022-07-20 22:29:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:29:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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 54 [2022-07-20 22:29:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:16,020 INFO L225 Difference]: With dead ends: 619 [2022-07-20 22:29:16,020 INFO L226 Difference]: Without dead ends: 591 [2022-07-20 22:29:16,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-20 22:29:16,020 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 287 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:16,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2526 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-20 22:29:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 587. [2022-07-20 22:29:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 499 states have (on average 1.2725450901803608) internal successors, (635), 506 states have internal predecessors, (635), 51 states have call successors, (51), 28 states have call predecessors, (51), 36 states have return successors, (62), 52 states have call predecessors, (62), 46 states have call successors, (62) [2022-07-20 22:29:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 748 transitions. [2022-07-20 22:29:16,061 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 748 transitions. Word has length 54 [2022-07-20 22:29:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 748 transitions. [2022-07-20 22:29:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 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) [2022-07-20 22:29:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 748 transitions. [2022-07-20 22:29:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:29:16,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:16,064 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-20 22:29:16,064 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1415863677, now seen corresponding path program 1 times [2022-07-20 22:29:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009700193] [2022-07-20 22:29:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009700193] [2022-07-20 22:29:16,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009700193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:16,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:16,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:29:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313245395] [2022-07-20 22:29:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:16,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:29:16,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:29:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:29:16,102 INFO L87 Difference]: Start difference. First operand 587 states and 748 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-07-20 22:29:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:16,384 INFO L93 Difference]: Finished difference Result 613 states and 778 transitions. [2022-07-20 22:29:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:16,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 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 54 [2022-07-20 22:29:16,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:16,386 INFO L225 Difference]: With dead ends: 613 [2022-07-20 22:29:16,386 INFO L226 Difference]: Without dead ends: 580 [2022-07-20 22:29:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:16,387 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 232 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 951 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-20 22:29:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 576. [2022-07-20 22:29:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 489 states have (on average 1.2638036809815951) internal successors, (618), 496 states have internal predecessors, (618), 51 states have call successors, (51), 28 states have call predecessors, (51), 35 states have return successors, (61), 51 states have call predecessors, (61), 46 states have call successors, (61) [2022-07-20 22:29:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 730 transitions. [2022-07-20 22:29:16,430 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 730 transitions. Word has length 54 [2022-07-20 22:29:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:16,430 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 730 transitions. [2022-07-20 22:29:16,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-07-20 22:29:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 730 transitions. [2022-07-20 22:29:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:29:16,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:16,432 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-20 22:29:16,432 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash -275547021, now seen corresponding path program 1 times [2022-07-20 22:29:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:16,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986684350] [2022-07-20 22:29:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-20 22:29:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:16,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986684350] [2022-07-20 22:29:16,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986684350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:16,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:16,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:29:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353607333] [2022-07-20 22:29:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:16,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:29:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:29:16,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:16,490 INFO L87 Difference]: Start difference. First operand 576 states and 730 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:16,842 INFO L93 Difference]: Finished difference Result 625 states and 782 transitions. [2022-07-20 22:29:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:29:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-20 22:29:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:16,844 INFO L225 Difference]: With dead ends: 625 [2022-07-20 22:29:16,844 INFO L226 Difference]: Without dead ends: 594 [2022-07-20 22:29:16,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:29:16,845 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 282 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:16,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1506 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-07-20 22:29:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 576. [2022-07-20 22:29:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 489 states have (on average 1.261758691206544) internal successors, (617), 496 states have internal predecessors, (617), 51 states have call successors, (51), 28 states have call predecessors, (51), 35 states have return successors, (61), 51 states have call predecessors, (61), 46 states have call successors, (61) [2022-07-20 22:29:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 729 transitions. [2022-07-20 22:29:16,900 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 729 transitions. Word has length 56 [2022-07-20 22:29:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:16,901 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 729 transitions. [2022-07-20 22:29:16,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 729 transitions. [2022-07-20 22:29:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:29:16,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:16,903 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-20 22:29:16,903 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -252914767, now seen corresponding path program 1 times [2022-07-20 22:29:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072765075] [2022-07-20 22:29:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-20 22:29:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:17,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072765075] [2022-07-20 22:29:17,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072765075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:17,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:17,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740028896] [2022-07-20 22:29:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:17,018 INFO L87 Difference]: Start difference. First operand 576 states and 729 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:17,696 INFO L93 Difference]: Finished difference Result 619 states and 778 transitions. [2022-07-20 22:29:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-07-20 22:29:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:17,698 INFO L225 Difference]: With dead ends: 619 [2022-07-20 22:29:17,698 INFO L226 Difference]: Without dead ends: 589 [2022-07-20 22:29:17,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:17,699 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 260 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:17,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 3382 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-20 22:29:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 571. [2022-07-20 22:29:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 485 states have (on average 1.2577319587628866) internal successors, (610), 492 states have internal predecessors, (610), 50 states have call successors, (50), 28 states have call predecessors, (50), 35 states have return successors, (59), 50 states have call predecessors, (59), 45 states have call successors, (59) [2022-07-20 22:29:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 719 transitions. [2022-07-20 22:29:17,728 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 719 transitions. Word has length 56 [2022-07-20 22:29:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 719 transitions. [2022-07-20 22:29:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 719 transitions. [2022-07-20 22:29:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:29:17,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:17,730 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-20 22:29:17,731 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1867013461, now seen corresponding path program 1 times [2022-07-20 22:29:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:17,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226701269] [2022-07-20 22:29:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-20 22:29:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:17,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226701269] [2022-07-20 22:29:17,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226701269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:17,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:17,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:29:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194481764] [2022-07-20 22:29:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:17,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:29:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:29:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:17,787 INFO L87 Difference]: Start difference. First operand 571 states and 719 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:18,163 INFO L93 Difference]: Finished difference Result 602 states and 751 transitions. [2022-07-20 22:29:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:29:18,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-20 22:29:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:18,164 INFO L225 Difference]: With dead ends: 602 [2022-07-20 22:29:18,165 INFO L226 Difference]: Without dead ends: 565 [2022-07-20 22:29:18,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:29:18,165 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 170 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:18,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1807 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-20 22:29:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2022-07-20 22:29:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 480 states have (on average 1.2583333333333333) internal successors, (604), 487 states have internal predecessors, (604), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-20 22:29:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 711 transitions. [2022-07-20 22:29:18,197 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 711 transitions. Word has length 56 [2022-07-20 22:29:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:18,197 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 711 transitions. [2022-07-20 22:29:18,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 711 transitions. [2022-07-20 22:29:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:29:18,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:18,199 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:18,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-20 22:29:18,200 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash -929165957, now seen corresponding path program 1 times [2022-07-20 22:29:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:18,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136641017] [2022-07-20 22:29:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:18,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136641017] [2022-07-20 22:29:18,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136641017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:18,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:18,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:29:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686069352] [2022-07-20 22:29:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 22:29:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 22:29:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:29:18,298 INFO L87 Difference]: Start difference. First operand 565 states and 711 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 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) [2022-07-20 22:29:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:18,964 INFO L93 Difference]: Finished difference Result 722 states and 895 transitions. [2022-07-20 22:29:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 22:29:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 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 56 [2022-07-20 22:29:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:18,966 INFO L225 Difference]: With dead ends: 722 [2022-07-20 22:29:18,966 INFO L226 Difference]: Without dead ends: 604 [2022-07-20 22:29:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-20 22:29:18,967 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 217 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2709 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-20 22:29:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 571. [2022-07-20 22:29:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 493 states have internal predecessors, (606), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-20 22:29:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 713 transitions. [2022-07-20 22:29:19,015 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 713 transitions. Word has length 56 [2022-07-20 22:29:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:19,016 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 713 transitions. [2022-07-20 22:29:19,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 8 states have internal predecessors, (51), 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) [2022-07-20 22:29:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 713 transitions. [2022-07-20 22:29:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-20 22:29:19,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:19,017 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-20 22:29:19,018 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:19,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash -535968494, now seen corresponding path program 1 times [2022-07-20 22:29:19,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:19,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136882332] [2022-07-20 22:29:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:19,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:29:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:29:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:19,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136882332] [2022-07-20 22:29:19,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136882332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:19,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:19,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337360162] [2022-07-20 22:29:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:19,151 INFO L87 Difference]: Start difference. First operand 571 states and 713 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:19,799 INFO L93 Difference]: Finished difference Result 591 states and 734 transitions. [2022-07-20 22:29:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2022-07-20 22:29:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:19,801 INFO L225 Difference]: With dead ends: 591 [2022-07-20 22:29:19,801 INFO L226 Difference]: Without dead ends: 569 [2022-07-20 22:29:19,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:19,802 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 235 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:19,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 3060 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-20 22:29:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-07-20 22:29:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 484 states have (on average 1.2458677685950412) internal successors, (603), 491 states have internal predecessors, (603), 49 states have call successors, (49), 28 states have call predecessors, (49), 35 states have return successors, (58), 49 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-20 22:29:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 710 transitions. [2022-07-20 22:29:19,842 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 710 transitions. Word has length 62 [2022-07-20 22:29:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:19,842 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 710 transitions. [2022-07-20 22:29:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 710 transitions. [2022-07-20 22:29:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 22:29:19,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:19,843 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-20 22:29:19,844 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -274878733, now seen corresponding path program 1 times [2022-07-20 22:29:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677206532] [2022-07-20 22:29:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-20 22:29:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:29:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-20 22:29:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:19,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677206532] [2022-07-20 22:29:19,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677206532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:19,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:19,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:29:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630074274] [2022-07-20 22:29:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:19,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:29:19,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:19,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:29:19,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:19,904 INFO L87 Difference]: Start difference. First operand 569 states and 710 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:20,301 INFO L93 Difference]: Finished difference Result 600 states and 742 transitions. [2022-07-20 22:29:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:29:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-07-20 22:29:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:20,303 INFO L225 Difference]: With dead ends: 600 [2022-07-20 22:29:20,303 INFO L226 Difference]: Without dead ends: 553 [2022-07-20 22:29:20,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:29:20,304 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 170 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:20,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1671 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-20 22:29:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-20 22:29:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 471 states have (on average 1.2420382165605095) internal successors, (585), 478 states have internal predecessors, (585), 46 states have call successors, (46), 28 states have call predecessors, (46), 35 states have return successors, (54), 46 states have call predecessors, (54), 41 states have call successors, (54) [2022-07-20 22:29:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 685 transitions. [2022-07-20 22:29:20,346 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 685 transitions. Word has length 63 [2022-07-20 22:29:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:20,346 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 685 transitions. [2022-07-20 22:29:20,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 22:29:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 685 transitions. [2022-07-20 22:29:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:29:20,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:20,347 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-20 22:29:20,348 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1927582732, now seen corresponding path program 1 times [2022-07-20 22:29:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:20,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466267366] [2022-07-20 22:29:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-20 22:29:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:29:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:20,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466267366] [2022-07-20 22:29:20,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466267366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:20,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:20,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:29:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211151619] [2022-07-20 22:29:20,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:20,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:29:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:29:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:20,404 INFO L87 Difference]: Start difference. First operand 553 states and 685 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:20,753 INFO L93 Difference]: Finished difference Result 584 states and 717 transitions. [2022-07-20 22:29:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:29:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2022-07-20 22:29:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:20,755 INFO L225 Difference]: With dead ends: 584 [2022-07-20 22:29:20,755 INFO L226 Difference]: Without dead ends: 540 [2022-07-20 22:29:20,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:29:20,755 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 264 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:20,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1240 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 22:29:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-20 22:29:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-07-20 22:29:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 459 states have (on average 1.2374727668845316) internal successors, (568), 466 states have internal predecessors, (568), 45 states have call successors, (45), 28 states have call predecessors, (45), 35 states have return successors, (53), 45 states have call predecessors, (53), 40 states have call successors, (53) [2022-07-20 22:29:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 666 transitions. [2022-07-20 22:29:20,790 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 666 transitions. Word has length 58 [2022-07-20 22:29:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:20,790 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 666 transitions. [2022-07-20 22:29:20,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 22:29:20,790 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 666 transitions. [2022-07-20 22:29:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 22:29:20,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:20,791 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-20 22:29:20,791 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1948179698, now seen corresponding path program 1 times [2022-07-20 22:29:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468769162] [2022-07-20 22:29:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 22:29:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-20 22:29:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468769162] [2022-07-20 22:29:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468769162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 22:29:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936027139] [2022-07-20 22:29:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 22:29:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 22:29:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:29:20,942 INFO L87 Difference]: Start difference. First operand 540 states and 666 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 22:29:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:21,639 INFO L93 Difference]: Finished difference Result 556 states and 682 transitions. [2022-07-20 22:29:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:29:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2022-07-20 22:29:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:21,641 INFO L225 Difference]: With dead ends: 556 [2022-07-20 22:29:21,641 INFO L226 Difference]: Without dead ends: 535 [2022-07-20 22:29:21,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-20 22:29:21,641 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 207 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:21,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2652 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:29:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-07-20 22:29:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2022-07-20 22:29:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 456 states have (on average 1.236842105263158) internal successors, (564), 463 states have internal predecessors, (564), 43 states have call successors, (43), 28 states have call predecessors, (43), 35 states have return successors, (51), 43 states have call predecessors, (51), 38 states have call successors, (51) [2022-07-20 22:29:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 658 transitions. [2022-07-20 22:29:21,680 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 658 transitions. Word has length 64 [2022-07-20 22:29:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:21,680 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 658 transitions. [2022-07-20 22:29:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 22:29:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 658 transitions. [2022-07-20 22:29:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-20 22:29:21,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:21,681 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-20 22:29:21,681 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 233509778, now seen corresponding path program 1 times [2022-07-20 22:29:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051424752] [2022-07-20 22:29:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-20 22:29:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051424752] [2022-07-20 22:29:21,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051424752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:21,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:21,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 22:29:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5991486] [2022-07-20 22:29:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 22:29:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 22:29:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:29:21,816 INFO L87 Difference]: Start difference. First operand 535 states and 658 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:22,406 INFO L93 Difference]: Finished difference Result 537 states and 659 transitions. [2022-07-20 22:29:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:29:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 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 57 [2022-07-20 22:29:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:22,409 INFO L225 Difference]: With dead ends: 537 [2022-07-20 22:29:22,410 INFO L226 Difference]: Without dead ends: 493 [2022-07-20 22:29:22,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:29:22,410 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 115 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:22,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2522 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-07-20 22:29:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-07-20 22:29:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 419 states have (on average 1.2458233890214798) internal successors, (522), 425 states have internal predecessors, (522), 40 states have call successors, (40), 26 states have call predecessors, (40), 33 states have return successors, (49), 41 states have call predecessors, (49), 36 states have call successors, (49) [2022-07-20 22:29:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 611 transitions. [2022-07-20 22:29:22,441 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 611 transitions. Word has length 57 [2022-07-20 22:29:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:22,441 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 611 transitions. [2022-07-20 22:29:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 22:29:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 611 transitions. [2022-07-20 22:29:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:29:22,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:22,442 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-20 22:29:22,443 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1034079897, now seen corresponding path program 1 times [2022-07-20 22:29:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:22,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165356337] [2022-07-20 22:29:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165356337] [2022-07-20 22:29:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165356337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:29:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304379492] [2022-07-20 22:29:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 22:29:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 22:29:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:29:22,577 INFO L87 Difference]: Start difference. First operand 493 states and 611 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:23,822 INFO L93 Difference]: Finished difference Result 1028 states and 1263 transitions. [2022-07-20 22:29:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-20 22:29:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-07-20 22:29:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:23,825 INFO L225 Difference]: With dead ends: 1028 [2022-07-20 22:29:23,826 INFO L226 Difference]: Without dead ends: 908 [2022-07-20 22:29:23,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2022-07-20 22:29:23,827 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 686 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:23,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2237 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:29:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-07-20 22:29:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 717. [2022-07-20 22:29:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 604 states have (on average 1.2450331125827814) internal successors, (752), 616 states have internal predecessors, (752), 59 states have call successors, (59), 42 states have call predecessors, (59), 53 states have return successors, (75), 58 states have call predecessors, (75), 55 states have call successors, (75) [2022-07-20 22:29:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 886 transitions. [2022-07-20 22:29:23,905 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 886 transitions. Word has length 58 [2022-07-20 22:29:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:23,906 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 886 transitions. [2022-07-20 22:29:23,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 886 transitions. [2022-07-20 22:29:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:29:23,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:23,907 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-20 22:29:23,908 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash -158060891, now seen corresponding path program 1 times [2022-07-20 22:29:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:23,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147458786] [2022-07-20 22:29:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:23,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 22:29:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:23,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:23,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147458786] [2022-07-20 22:29:23,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147458786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858247036] [2022-07-20 22:29:23,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:23,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:23,957 INFO L87 Difference]: Start difference. First operand 717 states and 886 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:24,503 INFO L93 Difference]: Finished difference Result 1014 states and 1243 transitions. [2022-07-20 22:29:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:24,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2022-07-20 22:29:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:24,506 INFO L225 Difference]: With dead ends: 1014 [2022-07-20 22:29:24,506 INFO L226 Difference]: Without dead ends: 905 [2022-07-20 22:29:24,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-07-20 22:29:24,507 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 789 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:24,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1876 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:29:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-07-20 22:29:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 537. [2022-07-20 22:29:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 458 states have (on average 1.2314410480349345) internal successors, (564), 464 states have internal predecessors, (564), 42 states have call successors, (42), 30 states have call predecessors, (42), 36 states have return successors, (51), 42 states have call predecessors, (51), 38 states have call successors, (51) [2022-07-20 22:29:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 657 transitions. [2022-07-20 22:29:24,548 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 657 transitions. Word has length 58 [2022-07-20 22:29:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 657 transitions. [2022-07-20 22:29:24,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 22:29:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 657 transitions. [2022-07-20 22:29:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-20 22:29:24,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:24,549 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:24,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-20 22:29:24,549 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:24,549 INFO L85 PathProgramCache]: Analyzing trace with hash 273629316, now seen corresponding path program 1 times [2022-07-20 22:29:24,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:24,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234566804] [2022-07-20 22:29:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:24,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:24,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-20 22:29:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:29:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-20 22:29:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:29:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:24,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:24,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234566804] [2022-07-20 22:29:24,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234566804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:24,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:24,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-20 22:29:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561434303] [2022-07-20 22:29:24,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:24,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 22:29:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 22:29:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-20 22:29:24,685 INFO L87 Difference]: Start difference. First operand 537 states and 657 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:25,330 INFO L93 Difference]: Finished difference Result 554 states and 674 transitions. [2022-07-20 22:29:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 22:29:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2022-07-20 22:29:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:25,331 INFO L225 Difference]: With dead ends: 554 [2022-07-20 22:29:25,331 INFO L226 Difference]: Without dead ends: 504 [2022-07-20 22:29:25,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-07-20 22:29:25,332 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 218 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:25,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2377 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:29:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-07-20 22:29:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2022-07-20 22:29:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 432 states have (on average 1.2222222222222223) internal successors, (528), 438 states have internal predecessors, (528), 37 states have call successors, (37), 28 states have call predecessors, (37), 34 states have return successors, (45), 37 states have call predecessors, (45), 33 states have call successors, (45) [2022-07-20 22:29:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 610 transitions. [2022-07-20 22:29:25,385 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 610 transitions. Word has length 60 [2022-07-20 22:29:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:25,385 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 610 transitions. [2022-07-20 22:29:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 22:29:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 610 transitions. [2022-07-20 22:29:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:29:25,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:25,387 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:25,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-20 22:29:25,387 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1406802114, now seen corresponding path program 1 times [2022-07-20 22:29:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:25,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021120344] [2022-07-20 22:29:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:29:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-20 22:29:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:29:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:29:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:29:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021120344] [2022-07-20 22:29:25,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021120344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:29:25,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:29:25,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:29:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054060350] [2022-07-20 22:29:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:29:25,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:29:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:29:25,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:29:25,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:29:25,433 INFO L87 Difference]: Start difference. First operand 504 states and 610 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-07-20 22:29:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:29:25,645 INFO L93 Difference]: Finished difference Result 531 states and 638 transitions. [2022-07-20 22:29:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:29:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 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 58 [2022-07-20 22:29:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:29:25,646 INFO L225 Difference]: With dead ends: 531 [2022-07-20 22:29:25,647 INFO L226 Difference]: Without dead ends: 494 [2022-07-20 22:29:25,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:29:25,647 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 67 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:29:25,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1135 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 22:29:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-07-20 22:29:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2022-07-20 22:29:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 423 states have (on average 1.2222222222222223) internal successors, (517), 429 states have internal predecessors, (517), 36 states have call successors, (36), 28 states have call predecessors, (36), 34 states have return successors, (43), 36 states have call predecessors, (43), 32 states have call successors, (43) [2022-07-20 22:29:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 596 transitions. [2022-07-20 22:29:25,706 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 596 transitions. Word has length 58 [2022-07-20 22:29:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:29:25,706 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 596 transitions. [2022-07-20 22:29:25,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-07-20 22:29:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 596 transitions. [2022-07-20 22:29:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:29:25,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:29:25,709 INFO L195 NwaCegarLoop]: 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] [2022-07-20 22:29:25,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-20 22:29:25,709 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:29:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:29:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 472047151, now seen corresponding path program 1 times [2022-07-20 22:29:25,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:29:25,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018088300] [2022-07-20 22:29:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:29:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:29:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 22:29:25,725 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 22:29:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 22:29:25,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-20 22:29:25,777 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 22:29:25,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 22:29:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-20 22:29:25,783 INFO L356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:29:25,786 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 22:29:25,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:29:25 BoogieIcfgContainer [2022-07-20 22:29:25,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 22:29:25,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 22:29:25,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 22:29:25,881 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 22:29:25,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:28:46" (3/4) ... [2022-07-20 22:29:25,883 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-20 22:29:25,969 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 22:29:25,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 22:29:25,970 INFO L158 Benchmark]: Toolchain (without parser) took 41444.45ms. Allocated memory was 88.1MB in the beginning and 287.3MB in the end (delta: 199.2MB). Free memory was 64.4MB in the beginning and 193.9MB in the end (delta: -129.5MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,970 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 22:29:25,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.56ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 64.2MB in the beginning and 85.1MB in the end (delta: -20.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.10ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 78.7MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,970 INFO L158 Benchmark]: Boogie Preprocessor took 100.53ms. Allocated memory is still 125.8MB. Free memory was 78.7MB in the beginning and 73.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,970 INFO L158 Benchmark]: RCFGBuilder took 1123.57ms. Allocated memory is still 125.8MB. Free memory was 73.8MB in the beginning and 85.8MB in the end (delta: -12.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,971 INFO L158 Benchmark]: TraceAbstraction took 39459.71ms. Allocated memory was 125.8MB in the beginning and 287.3MB in the end (delta: 161.5MB). Free memory was 85.8MB in the beginning and 203.4MB in the end (delta: -117.5MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,971 INFO L158 Benchmark]: Witness Printer took 88.83ms. Allocated memory is still 287.3MB. Free memory was 203.4MB in the beginning and 193.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 22:29:25,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.56ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 64.2MB in the beginning and 85.1MB in the end (delta: -20.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.10ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 78.7MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.53ms. Allocated memory is still 125.8MB. Free memory was 78.7MB in the beginning and 73.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1123.57ms. Allocated memory is still 125.8MB. Free memory was 73.8MB in the beginning and 85.8MB in the end (delta: -12.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * TraceAbstraction took 39459.71ms. Allocated memory was 125.8MB in the beginning and 287.3MB in the end (delta: 161.5MB). Free memory was 85.8MB in the beginning and 203.4MB in the end (delta: -117.5MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 88.83ms. Allocated memory is still 287.3MB. Free memory was 203.4MB in the beginning and 193.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. 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: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(Context)=-1, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=-1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-1, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 470 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.3s, OverallIterations: 68, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21652 SdHoareTripleChecker+Valid, 23.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21326 mSDsluCounter, 160359 SdHoareTripleChecker+Invalid, 19.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125192 mSDsCounter, 5714 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41909 IncrementalHoareTripleChecker+Invalid, 47623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5714 mSolverCounterUnsat, 35167 mSDtfsCounter, 41909 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1098 GetRequests, 424 SyntacticMatches, 10 SemanticMatches, 664 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=821occurred in iteration=4, InterpolantAutomatonStates: 598, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 67 MinimizatonAttempts, 2265 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3221 NumberOfCodeBlocks, 3221 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 3158 ConstructedInterpolants, 0 QuantifiedInterpolants, 8979 SizeOfPredicates, 4 NumberOfNonLiveVariables, 471 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 69 InterpolantComputations, 67 PerfectInterpolantSequences, 12/15 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! [2022-07-20 22:29:26,011 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