./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea94c2a7f5c98d387db22a0b269794366125ef96ca4390d29fd777c1f058153c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:37:10,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:37:10,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:37:11,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:37:11,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:37:11,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:37:11,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:37:11,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:37:11,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:37:11,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:37:11,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:37:11,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:37:11,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:37:11,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:37:11,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:37:11,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:37:11,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:37:11,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:37:11,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:37:11,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:37:11,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:37:11,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:37:11,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:37:11,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:37:11,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:37:11,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:37:11,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:37:11,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:37:11,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:37:11,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:37:11,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:37:11,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:37:11,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:37:11,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:37:11,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:37:11,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:37:11,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:37:11,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:37:11,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:37:11,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:37:11,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:37:11,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:37:11,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:37:11,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:37:11,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:37:11,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:37:11,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:37:11,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:37:11,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:37:11,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:37:11,093 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:37:11,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:37:11,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:37:11,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:37:11,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:37:11,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:37:11,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:37:11,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:37:11,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:37:11,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:37:11,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:37:11,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:37:11,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:37:11,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:37:11,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:37:11,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:37:11,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:37:11,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:37:11,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:37:11,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:37:11,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:37:11,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:37:11,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:37:11,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:37:11,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:37:11,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:37:11,097 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea94c2a7f5c98d387db22a0b269794366125ef96ca4390d29fd777c1f058153c [2021-12-06 21:37:11,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:37:11,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:37:11,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:37:11,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:37:11,303 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:37:11,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c [2021-12-06 21:37:11,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/data/7d54d6a19/c88f12ca5f1142d6a761305d723f41cd/FLAG2977fec34 [2021-12-06 21:37:11,758 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:37:11,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c [2021-12-06 21:37:11,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/data/7d54d6a19/c88f12ca5f1142d6a761305d723f41cd/FLAG2977fec34 [2021-12-06 21:37:11,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/data/7d54d6a19/c88f12ca5f1142d6a761305d723f41cd [2021-12-06 21:37:11,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:37:11,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:37:11,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:37:11,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:37:11,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:37:11,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:37:11" (1/1) ... [2021-12-06 21:37:11,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4daced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:11, skipping insertion in model container [2021-12-06 21:37:11,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:37:11" (1/1) ... [2021-12-06 21:37:11,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:37:11,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:37:11,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2021-12-06 21:37:12,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:37:12,029 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:37:12,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2021-12-06 21:37:12,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:37:12,089 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:37:12,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12 WrapperNode [2021-12-06 21:37:12,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:37:12,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:37:12,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:37:12,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:37:12,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,146 INFO L137 Inliner]: procedures = 37, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2021-12-06 21:37:12,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:37:12,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:37:12,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:37:12,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:37:12,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:37:12,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:37:12,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:37:12,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:37:12,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (1/1) ... [2021-12-06 21:37:12,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:37:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:37:12,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:37:12,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:37:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:37:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-06 21:37:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-06 21:37:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-06 21:37:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-06 21:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-06 21:37:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-06 21:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-06 21:37:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-06 21:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-06 21:37:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-06 21:37:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:37:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:37:12,361 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:37:12,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:37:12,370 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,428 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-06 21:37:12,428 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-06 21:37:12,429 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,441 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-06 21:37:12,441 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-06 21:37:12,454 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,459 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,464 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,469 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,470 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,473 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,474 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,475 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,479 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-06 21:37:12,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-06 21:37:12,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-06 21:37:12,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-06 21:37:12,791 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-06 21:37:12,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-06 21:37:12,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-06 21:37:12,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-06 21:37:12,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-06 21:37:12,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-06 21:37:12,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-06 21:37:12,794 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 21:37:12,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-06 21:37:12,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-06 21:37:12,822 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:37:12,829 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:37:12,829 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:37:12,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:12 BoogieIcfgContainer [2021-12-06 21:37:12,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:37:12,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:37:12,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:37:12,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:37:12,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:37:11" (1/3) ... [2021-12-06 21:37:12,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0d03b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:37:12, skipping insertion in model container [2021-12-06 21:37:12,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:12" (2/3) ... [2021-12-06 21:37:12,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0d03b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:37:12, skipping insertion in model container [2021-12-06 21:37:12,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:12" (3/3) ... [2021-12-06 21:37:12,836 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2021-12-06 21:37:12,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:37:12,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:37:12,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:37:12,880 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:37:12,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:37:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 215 states have internal predecessors, (286), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 32 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 21:37:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 21:37:12,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:12,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:12,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1624233909, now seen corresponding path program 1 times [2021-12-06 21:37:12,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:12,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37111611] [2021-12-06 21:37:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:12,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37111611] [2021-12-06 21:37:13,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37111611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:13,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622431053] [2021-12-06 21:37:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:13,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,071 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 215 states have internal predecessors, (286), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 32 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,154 INFO L93 Difference]: Finished difference Result 405 states and 624 transitions. [2021-12-06 21:37:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 21:37:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,165 INFO L225 Difference]: With dead ends: 405 [2021-12-06 21:37:13,166 INFO L226 Difference]: Without dead ends: 231 [2021-12-06 21:37:13,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,173 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 193 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:13,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-06 21:37:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-12-06 21:37:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 188 states have (on average 1.425531914893617) internal successors, (268), 208 states have internal predecessors, (268), 38 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 21:37:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 325 transitions. [2021-12-06 21:37:13,217 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 325 transitions. Word has length 13 [2021-12-06 21:37:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:13,218 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 325 transitions. [2021-12-06 21:37:13,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 325 transitions. [2021-12-06 21:37:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 21:37:13,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:37:13,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-06 21:37:13,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:13,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653526307] [2021-12-06 21:37:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653526307] [2021-12-06 21:37:13,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653526307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555482300] [2021-12-06 21:37:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:13,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,285 INFO L87 Difference]: Start difference. First operand 231 states and 325 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,370 INFO L93 Difference]: Finished difference Result 477 states and 675 transitions. [2021-12-06 21:37:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:13,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 21:37:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,373 INFO L225 Difference]: With dead ends: 477 [2021-12-06 21:37:13,373 INFO L226 Difference]: Without dead ends: 347 [2021-12-06 21:37:13,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,375 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 254 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:13,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 592 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-06 21:37:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 328. [2021-12-06 21:37:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 282 states have (on average 1.3652482269503545) internal successors, (385), 287 states have internal predecessors, (385), 38 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-06 21:37:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 463 transitions. [2021-12-06 21:37:13,402 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 463 transitions. Word has length 18 [2021-12-06 21:37:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:13,402 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 463 transitions. [2021-12-06 21:37:13,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 463 transitions. [2021-12-06 21:37:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:37:13,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:37:13,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2021-12-06 21:37:13,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621815860] [2021-12-06 21:37:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621815860] [2021-12-06 21:37:13,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621815860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:13,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338933617] [2021-12-06 21:37:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:13,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,462 INFO L87 Difference]: Start difference. First operand 328 states and 463 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,492 INFO L93 Difference]: Finished difference Result 721 states and 1014 transitions. [2021-12-06 21:37:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 21:37:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,496 INFO L225 Difference]: With dead ends: 721 [2021-12-06 21:37:13,496 INFO L226 Difference]: Without dead ends: 516 [2021-12-06 21:37:13,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,498 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 276 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:13,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-06 21:37:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 487. [2021-12-06 21:37:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 424 states have (on average 1.3632075471698113) internal successors, (578), 426 states have internal predecessors, (578), 48 states have call successors, (48), 17 states have call predecessors, (48), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2021-12-06 21:37:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 687 transitions. [2021-12-06 21:37:13,536 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 687 transitions. Word has length 19 [2021-12-06 21:37:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:13,537 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 687 transitions. [2021-12-06 21:37:13,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 687 transitions. [2021-12-06 21:37:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 21:37:13,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:37:13,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2021-12-06 21:37:13,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:13,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902295581] [2021-12-06 21:37:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902295581] [2021-12-06 21:37:13,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902295581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:13,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942943552] [2021-12-06 21:37:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:13,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:13,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,584 INFO L87 Difference]: Start difference. First operand 487 states and 687 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,625 INFO L93 Difference]: Finished difference Result 578 states and 804 transitions. [2021-12-06 21:37:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 21:37:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,630 INFO L225 Difference]: With dead ends: 578 [2021-12-06 21:37:13,630 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 21:37:13,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,632 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 277 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:13,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 389 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 21:37:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 531. [2021-12-06 21:37:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 462 states have (on average 1.3636363636363635) internal successors, (630), 470 states have internal predecessors, (630), 50 states have call successors, (50), 20 states have call predecessors, (50), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2021-12-06 21:37:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 745 transitions. [2021-12-06 21:37:13,661 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 745 transitions. Word has length 22 [2021-12-06 21:37:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:13,661 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 745 transitions. [2021-12-06 21:37:13,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 745 transitions. [2021-12-06 21:37:13,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 21:37:13,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:37:13,663 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2021-12-06 21:37:13,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:13,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197396317] [2021-12-06 21:37:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197396317] [2021-12-06 21:37:13,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197396317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:13,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709902682] [2021-12-06 21:37:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:13,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,702 INFO L87 Difference]: Start difference. First operand 531 states and 745 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,780 INFO L93 Difference]: Finished difference Result 816 states and 1148 transitions. [2021-12-06 21:37:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 21:37:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,786 INFO L225 Difference]: With dead ends: 816 [2021-12-06 21:37:13,786 INFO L226 Difference]: Without dead ends: 813 [2021-12-06 21:37:13,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:13,787 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 123 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:13,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 671 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:13,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-12-06 21:37:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 622. [2021-12-06 21:37:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 547 states have (on average 1.3711151736745886) internal successors, (750), 558 states have internal predecessors, (750), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 874 transitions. [2021-12-06 21:37:13,825 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 874 transitions. Word has length 27 [2021-12-06 21:37:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:13,826 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 874 transitions. [2021-12-06 21:37:13,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 874 transitions. [2021-12-06 21:37:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 21:37:13,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:37:13,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2021-12-06 21:37:13,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028090895] [2021-12-06 21:37:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:13,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:13,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028090895] [2021-12-06 21:37:13,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028090895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:37:13,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108370857] [2021-12-06 21:37:13,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:13,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:13,897 INFO L87 Difference]: Start difference. First operand 622 states and 874 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:14,081 INFO L93 Difference]: Finished difference Result 1097 states and 1516 transitions. [2021-12-06 21:37:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:37:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 21:37:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:14,086 INFO L225 Difference]: With dead ends: 1097 [2021-12-06 21:37:14,086 INFO L226 Difference]: Without dead ends: 655 [2021-12-06 21:37:14,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:14,088 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 518 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:14,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 535 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-12-06 21:37:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 613. [2021-12-06 21:37:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 538 states have (on average 1.3550185873605949) internal successors, (729), 549 states have internal predecessors, (729), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 853 transitions. [2021-12-06 21:37:14,132 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 853 transitions. Word has length 28 [2021-12-06 21:37:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:14,132 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 853 transitions. [2021-12-06 21:37:14,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 853 transitions. [2021-12-06 21:37:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 21:37:14,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:14,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:14,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:37:14,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2021-12-06 21:37:14,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96590602] [2021-12-06 21:37:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:14,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:37:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:14,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:14,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96590602] [2021-12-06 21:37:14,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96590602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:14,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:14,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:37:14,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166842865] [2021-12-06 21:37:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:14,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:14,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:14,179 INFO L87 Difference]: Start difference. First operand 613 states and 853 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:14,297 INFO L93 Difference]: Finished difference Result 666 states and 923 transitions. [2021-12-06 21:37:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-06 21:37:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:14,303 INFO L225 Difference]: With dead ends: 666 [2021-12-06 21:37:14,303 INFO L226 Difference]: Without dead ends: 661 [2021-12-06 21:37:14,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:14,304 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 67 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:14,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 743 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-06 21:37:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 640. [2021-12-06 21:37:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 565 states have (on average 1.3539823008849559) internal successors, (765), 575 states have internal predecessors, (765), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 889 transitions. [2021-12-06 21:37:14,347 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 889 transitions. Word has length 29 [2021-12-06 21:37:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:14,347 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 889 transitions. [2021-12-06 21:37:14,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 889 transitions. [2021-12-06 21:37:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 21:37:14,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:14,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:14,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:37:14,350 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 787890455, now seen corresponding path program 1 times [2021-12-06 21:37:14,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:14,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985609957] [2021-12-06 21:37:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:14,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:37:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:14,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:14,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985609957] [2021-12-06 21:37:14,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985609957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:14,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:14,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:14,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702851319] [2021-12-06 21:37:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:14,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:14,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:14,428 INFO L87 Difference]: Start difference. First operand 640 states and 889 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:14,612 INFO L93 Difference]: Finished difference Result 670 states and 925 transitions. [2021-12-06 21:37:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:37:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-06 21:37:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:14,615 INFO L225 Difference]: With dead ends: 670 [2021-12-06 21:37:14,615 INFO L226 Difference]: Without dead ends: 661 [2021-12-06 21:37:14,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:14,617 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 382 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:14,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 918 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-06 21:37:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 640. [2021-12-06 21:37:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 565 states have (on average 1.3504424778761062) internal successors, (763), 575 states have internal predecessors, (763), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 887 transitions. [2021-12-06 21:37:14,655 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 887 transitions. Word has length 30 [2021-12-06 21:37:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:14,656 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 887 transitions. [2021-12-06 21:37:14,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 887 transitions. [2021-12-06 21:37:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 21:37:14,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:14,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:14,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:37:14,657 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:14,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000714, now seen corresponding path program 1 times [2021-12-06 21:37:14,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593575420] [2021-12-06 21:37:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:14,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:14,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:14,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593575420] [2021-12-06 21:37:14,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593575420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:14,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:14,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:14,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924816934] [2021-12-06 21:37:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:14,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:14,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:14,682 INFO L87 Difference]: Start difference. First operand 640 states and 887 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:14,740 INFO L93 Difference]: Finished difference Result 655 states and 907 transitions. [2021-12-06 21:37:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 21:37:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:14,744 INFO L225 Difference]: With dead ends: 655 [2021-12-06 21:37:14,744 INFO L226 Difference]: Without dead ends: 652 [2021-12-06 21:37:14,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:14,745 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 16 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:14,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 553 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-06 21:37:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 651. [2021-12-06 21:37:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 576 states have (on average 1.3489583333333333) internal successors, (777), 585 states have internal predecessors, (777), 52 states have call successors, (52), 23 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 901 transitions. [2021-12-06 21:37:14,776 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 901 transitions. Word has length 30 [2021-12-06 21:37:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:14,776 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 901 transitions. [2021-12-06 21:37:14,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 901 transitions. [2021-12-06 21:37:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 21:37:14,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:14,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:14,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:37:14,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:14,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:14,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2061053712, now seen corresponding path program 1 times [2021-12-06 21:37:14,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:14,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317764426] [2021-12-06 21:37:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:14,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:37:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:14,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317764426] [2021-12-06 21:37:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317764426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:14,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:14,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:14,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108200570] [2021-12-06 21:37:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:14,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:14,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:14,844 INFO L87 Difference]: Start difference. First operand 651 states and 901 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:15,048 INFO L93 Difference]: Finished difference Result 681 states and 937 transitions. [2021-12-06 21:37:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:37:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-06 21:37:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:15,052 INFO L225 Difference]: With dead ends: 681 [2021-12-06 21:37:15,052 INFO L226 Difference]: Without dead ends: 672 [2021-12-06 21:37:15,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:15,053 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 381 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:15,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 920 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-06 21:37:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 651. [2021-12-06 21:37:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 576 states have (on average 1.3454861111111112) internal successors, (775), 585 states have internal predecessors, (775), 52 states have call successors, (52), 23 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-06 21:37:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 899 transitions. [2021-12-06 21:37:15,089 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 899 transitions. Word has length 31 [2021-12-06 21:37:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:15,089 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 899 transitions. [2021-12-06 21:37:15,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 899 transitions. [2021-12-06 21:37:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 21:37:15,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:15,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:15,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:37:15,090 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -476390944, now seen corresponding path program 1 times [2021-12-06 21:37:15,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:15,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067154636] [2021-12-06 21:37:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:15,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 21:37:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:15,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:15,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067154636] [2021-12-06 21:37:15,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067154636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:15,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889524384] [2021-12-06 21:37:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:15,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:15,124 INFO L87 Difference]: Start difference. First operand 651 states and 899 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:15,244 INFO L93 Difference]: Finished difference Result 682 states and 936 transitions. [2021-12-06 21:37:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-06 21:37:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:15,247 INFO L225 Difference]: With dead ends: 682 [2021-12-06 21:37:15,248 INFO L226 Difference]: Without dead ends: 666 [2021-12-06 21:37:15,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:15,249 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 52 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:15,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1083 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:15,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-06 21:37:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 649. [2021-12-06 21:37:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 575 states have (on average 1.3443478260869566) internal successors, (773), 584 states have internal predecessors, (773), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-06 21:37:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 895 transitions. [2021-12-06 21:37:15,279 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 895 transitions. Word has length 32 [2021-12-06 21:37:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:15,279 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 895 transitions. [2021-12-06 21:37:15,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 895 transitions. [2021-12-06 21:37:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 21:37:15,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:15,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:15,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:37:15,280 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528250, now seen corresponding path program 1 times [2021-12-06 21:37:15,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:15,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501777114] [2021-12-06 21:37:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:15,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:15,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501777114] [2021-12-06 21:37:15,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501777114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:15,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595693875] [2021-12-06 21:37:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:37:15,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:37:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:15,318 INFO L87 Difference]: Start difference. First operand 649 states and 895 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:15,387 INFO L93 Difference]: Finished difference Result 1056 states and 1452 transitions. [2021-12-06 21:37:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:37:15,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 21:37:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:15,390 INFO L225 Difference]: With dead ends: 1056 [2021-12-06 21:37:15,391 INFO L226 Difference]: Without dead ends: 657 [2021-12-06 21:37:15,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:37:15,392 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 5 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:15,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 564 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-06 21:37:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-12-06 21:37:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 583 states have (on average 1.3447684391080617) internal successors, (784), 592 states have internal predecessors, (784), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-06 21:37:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 906 transitions. [2021-12-06 21:37:15,422 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 906 transitions. Word has length 34 [2021-12-06 21:37:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:15,422 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 906 transitions. [2021-12-06 21:37:15,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 906 transitions. [2021-12-06 21:37:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 21:37:15,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:15,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:15,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:37:15,424 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2021-12-06 21:37:15,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406017899] [2021-12-06 21:37:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:15,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:37:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:15,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406017899] [2021-12-06 21:37:15,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406017899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:15,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677358674] [2021-12-06 21:37:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:15,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:15,463 INFO L87 Difference]: Start difference. First operand 657 states and 906 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:15,634 INFO L93 Difference]: Finished difference Result 741 states and 990 transitions. [2021-12-06 21:37:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:37:15,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-06 21:37:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:15,637 INFO L225 Difference]: With dead ends: 741 [2021-12-06 21:37:15,637 INFO L226 Difference]: Without dead ends: 482 [2021-12-06 21:37:15,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:15,638 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 385 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:15,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 831 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-06 21:37:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 441. [2021-12-06 21:37:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 388 states have (on average 1.3144329896907216) internal successors, (510), 397 states have internal predecessors, (510), 36 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-06 21:37:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 585 transitions. [2021-12-06 21:37:15,660 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 585 transitions. Word has length 38 [2021-12-06 21:37:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:15,660 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 585 transitions. [2021-12-06 21:37:15,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 585 transitions. [2021-12-06 21:37:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 21:37:15,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:15,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:15,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:37:15,667 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2021-12-06 21:37:15,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:15,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666433553] [2021-12-06 21:37:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:15,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:37:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:15,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:15,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666433553] [2021-12-06 21:37:15,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666433553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:37:15,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126066715] [2021-12-06 21:37:15,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:37:15,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:37:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:15,753 INFO L87 Difference]: Start difference. First operand 441 states and 585 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:15,900 INFO L93 Difference]: Finished difference Result 644 states and 856 transitions. [2021-12-06 21:37:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-06 21:37:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:15,902 INFO L225 Difference]: With dead ends: 644 [2021-12-06 21:37:15,902 INFO L226 Difference]: Without dead ends: 436 [2021-12-06 21:37:15,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:37:15,904 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 74 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:15,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1624 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-06 21:37:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 424. [2021-12-06 21:37:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 372 states have (on average 1.303763440860215) internal successors, (485), 380 states have internal predecessors, (485), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-06 21:37:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 559 transitions. [2021-12-06 21:37:15,930 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 559 transitions. Word has length 41 [2021-12-06 21:37:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:15,931 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 559 transitions. [2021-12-06 21:37:15,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 559 transitions. [2021-12-06 21:37:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 21:37:15,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:15,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:15,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:37:15,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2021-12-06 21:37:15,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:15,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493134090] [2021-12-06 21:37:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:15,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:15,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:15,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493134090] [2021-12-06 21:37:15,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493134090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:37:15,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626077811] [2021-12-06 21:37:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:37:15,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:37:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:15,972 INFO L87 Difference]: Start difference. First operand 424 states and 559 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:16,220 INFO L93 Difference]: Finished difference Result 530 states and 695 transitions. [2021-12-06 21:37:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:37:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-06 21:37:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:16,223 INFO L225 Difference]: With dead ends: 530 [2021-12-06 21:37:16,223 INFO L226 Difference]: Without dead ends: 463 [2021-12-06 21:37:16,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:37:16,224 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 362 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:16,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1148 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:37:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-06 21:37:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 424. [2021-12-06 21:37:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 372 states have (on average 1.2983870967741935) internal successors, (483), 380 states have internal predecessors, (483), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-06 21:37:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 557 transitions. [2021-12-06 21:37:16,257 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 557 transitions. Word has length 40 [2021-12-06 21:37:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:16,257 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 557 transitions. [2021-12-06 21:37:16,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 557 transitions. [2021-12-06 21:37:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 21:37:16,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:16,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:16,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:37:16,259 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1983910806, now seen corresponding path program 1 times [2021-12-06 21:37:16,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:16,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837720962] [2021-12-06 21:37:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:16,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:37:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:16,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837720962] [2021-12-06 21:37:16,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837720962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:16,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:16,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:16,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181232932] [2021-12-06 21:37:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:16,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:16,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:16,307 INFO L87 Difference]: Start difference. First operand 424 states and 557 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:16,437 INFO L93 Difference]: Finished difference Result 456 states and 592 transitions. [2021-12-06 21:37:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:37:16,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-06 21:37:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:16,440 INFO L225 Difference]: With dead ends: 456 [2021-12-06 21:37:16,440 INFO L226 Difference]: Without dead ends: 434 [2021-12-06 21:37:16,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:37:16,441 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 80 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:16,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1331 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-06 21:37:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2021-12-06 21:37:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2972972972972974) internal successors, (480), 377 states have internal predecessors, (480), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2021-12-06 21:37:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 552 transitions. [2021-12-06 21:37:16,474 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 552 transitions. Word has length 41 [2021-12-06 21:37:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:16,474 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 552 transitions. [2021-12-06 21:37:16,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 552 transitions. [2021-12-06 21:37:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 21:37:16,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:16,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:16,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:37:16,476 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2021-12-06 21:37:16,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427370272] [2021-12-06 21:37:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:16,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:37:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:16,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:16,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427370272] [2021-12-06 21:37:16,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427370272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:16,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:16,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:16,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313068116] [2021-12-06 21:37:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:16,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:16,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:16,546 INFO L87 Difference]: Start difference. First operand 420 states and 552 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:16,755 INFO L93 Difference]: Finished difference Result 623 states and 820 transitions. [2021-12-06 21:37:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:37:16,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-06 21:37:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:16,758 INFO L225 Difference]: With dead ends: 623 [2021-12-06 21:37:16,758 INFO L226 Difference]: Without dead ends: 432 [2021-12-06 21:37:16,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:16,760 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 321 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:16,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 915 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-06 21:37:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 420. [2021-12-06 21:37:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2945945945945947) internal successors, (479), 377 states have internal predecessors, (479), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2021-12-06 21:37:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 551 transitions. [2021-12-06 21:37:16,793 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 551 transitions. Word has length 43 [2021-12-06 21:37:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:16,793 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 551 transitions. [2021-12-06 21:37:16,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 551 transitions. [2021-12-06 21:37:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 21:37:16,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:16,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:16,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:37:16,795 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2021-12-06 21:37:16,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:16,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017607668] [2021-12-06 21:37:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:16,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:16,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:16,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017607668] [2021-12-06 21:37:16,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017607668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:16,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:16,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:16,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070444633] [2021-12-06 21:37:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:16,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:16,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:16,844 INFO L87 Difference]: Start difference. First operand 420 states and 551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:17,038 INFO L93 Difference]: Finished difference Result 702 states and 930 transitions. [2021-12-06 21:37:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:37:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-06 21:37:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:17,041 INFO L225 Difference]: With dead ends: 702 [2021-12-06 21:37:17,041 INFO L226 Difference]: Without dead ends: 439 [2021-12-06 21:37:17,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:37:17,042 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 340 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:17,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 929 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-06 21:37:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 412. [2021-12-06 21:37:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 363 states have (on average 1.2865013774104683) internal successors, (467), 370 states have internal predecessors, (467), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (37), 27 states have call predecessors, (37), 27 states have call successors, (37) [2021-12-06 21:37:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 538 transitions. [2021-12-06 21:37:17,064 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 538 transitions. Word has length 42 [2021-12-06 21:37:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:17,065 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 538 transitions. [2021-12-06 21:37:17,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 538 transitions. [2021-12-06 21:37:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 21:37:17,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:17,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:17,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:37:17,071 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2021-12-06 21:37:17,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:17,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904801985] [2021-12-06 21:37:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:17,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:17,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:17,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904801985] [2021-12-06 21:37:17,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904801985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:17,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:17,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:37:17,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011672422] [2021-12-06 21:37:17,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:17,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:17,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:17,111 INFO L87 Difference]: Start difference. First operand 412 states and 538 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:17,231 INFO L93 Difference]: Finished difference Result 443 states and 571 transitions. [2021-12-06 21:37:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-06 21:37:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:17,234 INFO L225 Difference]: With dead ends: 443 [2021-12-06 21:37:17,235 INFO L226 Difference]: Without dead ends: 424 [2021-12-06 21:37:17,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:17,236 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 83 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:17,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 733 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-06 21:37:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 406. [2021-12-06 21:37:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 358 states have (on average 1.270949720670391) internal successors, (455), 364 states have internal predecessors, (455), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (37), 27 states have call predecessors, (37), 27 states have call successors, (37) [2021-12-06 21:37:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 525 transitions. [2021-12-06 21:37:17,264 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 525 transitions. Word has length 42 [2021-12-06 21:37:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:17,264 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 525 transitions. [2021-12-06 21:37:17,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 525 transitions. [2021-12-06 21:37:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 21:37:17,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:17,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:17,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:37:17,266 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash -33087980, now seen corresponding path program 1 times [2021-12-06 21:37:17,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:17,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051505621] [2021-12-06 21:37:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:17,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:17,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:17,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051505621] [2021-12-06 21:37:17,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051505621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:17,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:17,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:37:17,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997375603] [2021-12-06 21:37:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:17,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:37:17,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:17,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:37:17,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:37:17,322 INFO L87 Difference]: Start difference. First operand 406 states and 525 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:17,495 INFO L93 Difference]: Finished difference Result 451 states and 580 transitions. [2021-12-06 21:37:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:37:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-06 21:37:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:17,498 INFO L225 Difference]: With dead ends: 451 [2021-12-06 21:37:17,498 INFO L226 Difference]: Without dead ends: 447 [2021-12-06 21:37:17,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:37:17,500 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 228 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:17,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 1634 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-06 21:37:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 421. [2021-12-06 21:37:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 372 states have (on average 1.260752688172043) internal successors, (469), 378 states have internal predecessors, (469), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (43), 28 states have call predecessors, (43), 27 states have call successors, (43) [2021-12-06 21:37:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 545 transitions. [2021-12-06 21:37:17,542 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 545 transitions. Word has length 43 [2021-12-06 21:37:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:17,542 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 545 transitions. [2021-12-06 21:37:17,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 545 transitions. [2021-12-06 21:37:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 21:37:17,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:17,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:17,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:37:17,544 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -32811150, now seen corresponding path program 1 times [2021-12-06 21:37:17,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712058272] [2021-12-06 21:37:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:17,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:17,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712058272] [2021-12-06 21:37:17,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712058272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:17,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:17,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:37:17,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689682649] [2021-12-06 21:37:17,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:17,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:37:17,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:37:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:37:17,600 INFO L87 Difference]: Start difference. First operand 421 states and 545 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:17,786 INFO L93 Difference]: Finished difference Result 447 states and 573 transitions. [2021-12-06 21:37:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:37:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-06 21:37:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:17,788 INFO L225 Difference]: With dead ends: 447 [2021-12-06 21:37:17,789 INFO L226 Difference]: Without dead ends: 434 [2021-12-06 21:37:17,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:17,790 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 49 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:17,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1712 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-06 21:37:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 418. [2021-12-06 21:37:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 369 states have (on average 1.2628726287262872) internal successors, (466), 376 states have internal predecessors, (466), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (42), 27 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-06 21:37:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 541 transitions. [2021-12-06 21:37:17,813 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 541 transitions. Word has length 43 [2021-12-06 21:37:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:17,813 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 541 transitions. [2021-12-06 21:37:17,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 541 transitions. [2021-12-06 21:37:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 21:37:17,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:17,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:17,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:37:17,814 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -97902919, now seen corresponding path program 1 times [2021-12-06 21:37:17,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:17,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792170026] [2021-12-06 21:37:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:17,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 21:37:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:17,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792170026] [2021-12-06 21:37:17,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792170026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:17,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:17,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:37:17,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543532653] [2021-12-06 21:37:17,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:17,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:17,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:17,837 INFO L87 Difference]: Start difference. First operand 418 states and 541 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:17,916 INFO L93 Difference]: Finished difference Result 455 states and 582 transitions. [2021-12-06 21:37:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-06 21:37:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:17,919 INFO L225 Difference]: With dead ends: 455 [2021-12-06 21:37:17,919 INFO L226 Difference]: Without dead ends: 432 [2021-12-06 21:37:17,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:17,920 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 95 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:17,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 824 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-06 21:37:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 417. [2021-12-06 21:37:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 368 states have (on average 1.25) internal successors, (460), 375 states have internal predecessors, (460), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (42), 27 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-06 21:37:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2021-12-06 21:37:17,947 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 43 [2021-12-06 21:37:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:17,948 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2021-12-06 21:37:17,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2021-12-06 21:37:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 21:37:17,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:17,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:17,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:37:17,950 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1182842798, now seen corresponding path program 1 times [2021-12-06 21:37:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739595778] [2021-12-06 21:37:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:17,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:37:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:17,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:17,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739595778] [2021-12-06 21:37:17,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739595778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:17,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:17,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:37:17,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343089202] [2021-12-06 21:37:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:17,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:37:17,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:37:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:17,995 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:18,191 INFO L93 Difference]: Finished difference Result 440 states and 558 transitions. [2021-12-06 21:37:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:37:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-06 21:37:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:18,195 INFO L225 Difference]: With dead ends: 440 [2021-12-06 21:37:18,195 INFO L226 Difference]: Without dead ends: 424 [2021-12-06 21:37:18,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:18,196 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 389 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:18,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 878 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-06 21:37:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 401. [2021-12-06 21:37:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 354 states have (on average 1.2542372881355932) internal successors, (444), 360 states have internal predecessors, (444), 32 states have call successors, (32), 15 states have call predecessors, (32), 14 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-06 21:37:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 512 transitions. [2021-12-06 21:37:18,226 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 512 transitions. Word has length 44 [2021-12-06 21:37:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:18,226 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 512 transitions. [2021-12-06 21:37:18,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 512 transitions. [2021-12-06 21:37:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 21:37:18,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:18,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:18,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:37:18,228 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2021-12-06 21:37:18,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:18,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230906251] [2021-12-06 21:37:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:18,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:37:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:18,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:18,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230906251] [2021-12-06 21:37:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230906251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:18,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:18,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:37:18,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743336626] [2021-12-06 21:37:18,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:18,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:18,262 INFO L87 Difference]: Start difference. First operand 401 states and 512 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:18,384 INFO L93 Difference]: Finished difference Result 680 states and 870 transitions. [2021-12-06 21:37:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 21:37:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:18,387 INFO L225 Difference]: With dead ends: 680 [2021-12-06 21:37:18,387 INFO L226 Difference]: Without dead ends: 492 [2021-12-06 21:37:18,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:18,389 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 159 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:18,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 768 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-12-06 21:37:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 454. [2021-12-06 21:37:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 402 states have (on average 1.256218905472637) internal successors, (505), 407 states have internal predecessors, (505), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2021-12-06 21:37:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 581 transitions. [2021-12-06 21:37:18,426 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 581 transitions. Word has length 46 [2021-12-06 21:37:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:18,426 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 581 transitions. [2021-12-06 21:37:18,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 581 transitions. [2021-12-06 21:37:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 21:37:18,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:18,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:18,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:37:18,427 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash -910194117, now seen corresponding path program 1 times [2021-12-06 21:37:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808627161] [2021-12-06 21:37:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:18,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 21:37:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:18,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:18,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808627161] [2021-12-06 21:37:18,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808627161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:18,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:18,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:18,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978055936] [2021-12-06 21:37:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:18,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:18,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:18,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:18,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:18,460 INFO L87 Difference]: Start difference. First operand 454 states and 581 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:18,563 INFO L93 Difference]: Finished difference Result 484 states and 613 transitions. [2021-12-06 21:37:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:37:18,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-06 21:37:18,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:18,566 INFO L225 Difference]: With dead ends: 484 [2021-12-06 21:37:18,567 INFO L226 Difference]: Without dead ends: 461 [2021-12-06 21:37:18,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:37:18,568 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 95 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:18,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1062 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-06 21:37:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 436. [2021-12-06 21:37:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 386 states have (on average 1.261658031088083) internal successors, (487), 391 states have internal predecessors, (487), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-06 21:37:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 561 transitions. [2021-12-06 21:37:18,599 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 561 transitions. Word has length 45 [2021-12-06 21:37:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:18,599 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 561 transitions. [2021-12-06 21:37:18,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 561 transitions. [2021-12-06 21:37:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 21:37:18,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:18,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:37:18,601 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2021-12-06 21:37:18,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:18,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420437468] [2021-12-06 21:37:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:18,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:18,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:18,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420437468] [2021-12-06 21:37:18,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420437468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:18,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:18,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:37:18,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594734904] [2021-12-06 21:37:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:18,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:37:18,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:37:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:18,664 INFO L87 Difference]: Start difference. First operand 436 states and 561 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:18,795 INFO L93 Difference]: Finished difference Result 698 states and 899 transitions. [2021-12-06 21:37:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:37:18,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 21:37:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:18,797 INFO L225 Difference]: With dead ends: 698 [2021-12-06 21:37:18,797 INFO L226 Difference]: Without dead ends: 477 [2021-12-06 21:37:18,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:18,798 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 52 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:18,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1662 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-06 21:37:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 436. [2021-12-06 21:37:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 386 states have (on average 1.2564766839378239) internal successors, (485), 391 states have internal predecessors, (485), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-06 21:37:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 559 transitions. [2021-12-06 21:37:18,826 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 559 transitions. Word has length 48 [2021-12-06 21:37:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:18,826 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 559 transitions. [2021-12-06 21:37:18,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 559 transitions. [2021-12-06 21:37:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 21:37:18,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:18,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:18,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:37:18,828 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:18,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1519307082, now seen corresponding path program 1 times [2021-12-06 21:37:18,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:18,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968009795] [2021-12-06 21:37:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:18,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 21:37:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:18,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:18,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968009795] [2021-12-06 21:37:18,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968009795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:18,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:18,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:37:18,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434996357] [2021-12-06 21:37:18,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:18,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:37:18,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:37:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:18,875 INFO L87 Difference]: Start difference. First operand 436 states and 559 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:19,067 INFO L93 Difference]: Finished difference Result 463 states and 588 transitions. [2021-12-06 21:37:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:37:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 21:37:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:19,070 INFO L225 Difference]: With dead ends: 463 [2021-12-06 21:37:19,070 INFO L226 Difference]: Without dead ends: 444 [2021-12-06 21:37:19,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:37:19,071 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 53 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:19,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1866 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-06 21:37:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 432. [2021-12-06 21:37:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 383 states have (on average 1.2558746736292428) internal successors, (481), 388 states have internal predecessors, (481), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-06 21:37:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 553 transitions. [2021-12-06 21:37:19,105 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 553 transitions. Word has length 48 [2021-12-06 21:37:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:19,105 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 553 transitions. [2021-12-06 21:37:19,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 553 transitions. [2021-12-06 21:37:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 21:37:19,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:19,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:19,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 21:37:19,107 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash 883777374, now seen corresponding path program 1 times [2021-12-06 21:37:19,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:19,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566401333] [2021-12-06 21:37:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:19,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:19,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566401333] [2021-12-06 21:37:19,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566401333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:19,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:19,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:37:19,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017770153] [2021-12-06 21:37:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:37:19,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:37:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:19,159 INFO L87 Difference]: Start difference. First operand 432 states and 553 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:19,346 INFO L93 Difference]: Finished difference Result 459 states and 582 transitions. [2021-12-06 21:37:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:37:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-06 21:37:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:19,349 INFO L225 Difference]: With dead ends: 459 [2021-12-06 21:37:19,349 INFO L226 Difference]: Without dead ends: 439 [2021-12-06 21:37:19,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:37:19,350 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 53 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:19,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1828 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-06 21:37:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-12-06 21:37:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 379 states have (on average 1.2559366754617414) internal successors, (476), 384 states have internal predecessors, (476), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2021-12-06 21:37:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 546 transitions. [2021-12-06 21:37:19,379 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 546 transitions. Word has length 49 [2021-12-06 21:37:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:19,379 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 546 transitions. [2021-12-06 21:37:19,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 546 transitions. [2021-12-06 21:37:19,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 21:37:19,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:19,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:19,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 21:37:19,381 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:19,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 164785177, now seen corresponding path program 1 times [2021-12-06 21:37:19,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:19,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776326227] [2021-12-06 21:37:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:19,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:19,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776326227] [2021-12-06 21:37:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776326227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:19,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:19,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:37:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268362801] [2021-12-06 21:37:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:19,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:37:19,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:37:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:19,429 INFO L87 Difference]: Start difference. First operand 427 states and 546 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:19,606 INFO L93 Difference]: Finished difference Result 454 states and 575 transitions. [2021-12-06 21:37:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:37:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-06 21:37:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:19,609 INFO L225 Difference]: With dead ends: 454 [2021-12-06 21:37:19,609 INFO L226 Difference]: Without dead ends: 435 [2021-12-06 21:37:19,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:37:19,610 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 53 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:19,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1782 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-06 21:37:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 423. [2021-12-06 21:37:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 376 states have (on average 1.2553191489361701) internal successors, (472), 381 states have internal predecessors, (472), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-06 21:37:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 540 transitions. [2021-12-06 21:37:19,638 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 540 transitions. Word has length 49 [2021-12-06 21:37:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:19,638 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 540 transitions. [2021-12-06 21:37:19,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 540 transitions. [2021-12-06 21:37:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 21:37:19,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:19,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:19,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 21:37:19,639 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2021-12-06 21:37:19,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:19,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206157016] [2021-12-06 21:37:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:19,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:37:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:19,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:19,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206157016] [2021-12-06 21:37:19,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206157016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:19,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:19,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:37:19,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745720827] [2021-12-06 21:37:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:19,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:37:19,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:37:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:19,704 INFO L87 Difference]: Start difference. First operand 423 states and 540 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:19,846 INFO L93 Difference]: Finished difference Result 777 states and 1007 transitions. [2021-12-06 21:37:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:37:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-06 21:37:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:19,854 INFO L225 Difference]: With dead ends: 777 [2021-12-06 21:37:19,854 INFO L226 Difference]: Without dead ends: 567 [2021-12-06 21:37:19,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:19,855 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 104 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:19,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1850 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-06 21:37:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 423. [2021-12-06 21:37:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 376 states have (on average 1.252659574468085) internal successors, (471), 381 states have internal predecessors, (471), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-06 21:37:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 539 transitions. [2021-12-06 21:37:19,880 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 539 transitions. Word has length 51 [2021-12-06 21:37:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:19,880 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 539 transitions. [2021-12-06 21:37:19,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 539 transitions. [2021-12-06 21:37:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 21:37:19,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:19,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 21:37:19,881 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1189199768, now seen corresponding path program 1 times [2021-12-06 21:37:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:19,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949574845] [2021-12-06 21:37:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:19,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 21:37:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:19,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:19,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949574845] [2021-12-06 21:37:19,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949574845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:19,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:19,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:37:19,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192103130] [2021-12-06 21:37:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:19,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:37:19,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:37:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:19,925 INFO L87 Difference]: Start difference. First operand 423 states and 539 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:20,098 INFO L93 Difference]: Finished difference Result 450 states and 568 transitions. [2021-12-06 21:37:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:37:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 21:37:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:20,100 INFO L225 Difference]: With dead ends: 450 [2021-12-06 21:37:20,100 INFO L226 Difference]: Without dead ends: 413 [2021-12-06 21:37:20,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:37:20,101 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 61 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:20,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1786 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-06 21:37:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 401. [2021-12-06 21:37:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 357 states have (on average 1.2521008403361344) internal successors, (447), 362 states have internal predecessors, (447), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2021-12-06 21:37:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 511 transitions. [2021-12-06 21:37:20,123 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 511 transitions. Word has length 53 [2021-12-06 21:37:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:20,123 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 511 transitions. [2021-12-06 21:37:20,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:37:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 511 transitions. [2021-12-06 21:37:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 21:37:20,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:20,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:20,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 21:37:20,124 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2021-12-06 21:37:20,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:20,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779568657] [2021-12-06 21:37:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:20,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 21:37:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:20,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779568657] [2021-12-06 21:37:20,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779568657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:20,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:20,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:37:20,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684381596] [2021-12-06 21:37:20,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:20,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:37:20,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:37:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:20,173 INFO L87 Difference]: Start difference. First operand 401 states and 511 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:20,329 INFO L93 Difference]: Finished difference Result 619 states and 785 transitions. [2021-12-06 21:37:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:37:20,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-12-06 21:37:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:20,331 INFO L225 Difference]: With dead ends: 619 [2021-12-06 21:37:20,332 INFO L226 Difference]: Without dead ends: 388 [2021-12-06 21:37:20,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:20,332 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 132 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:20,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1401 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-06 21:37:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 368. [2021-12-06 21:37:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 329 states have (on average 1.2522796352583587) internal successors, (412), 333 states have internal predecessors, (412), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-06 21:37:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 461 transitions. [2021-12-06 21:37:20,365 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 461 transitions. Word has length 59 [2021-12-06 21:37:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 461 transitions. [2021-12-06 21:37:20,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 461 transitions. [2021-12-06 21:37:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 21:37:20,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:20,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:20,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 21:37:20,367 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash 732659986, now seen corresponding path program 1 times [2021-12-06 21:37:20,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893245634] [2021-12-06 21:37:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:20,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:37:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:37:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:20,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893245634] [2021-12-06 21:37:20,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893245634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:20,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:20,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:37:20,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132958430] [2021-12-06 21:37:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:20,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:37:20,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:37:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:37:20,421 INFO L87 Difference]: Start difference. First operand 368 states and 461 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:20,707 INFO L93 Difference]: Finished difference Result 772 states and 944 transitions. [2021-12-06 21:37:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:37:20,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-06 21:37:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:20,710 INFO L225 Difference]: With dead ends: 772 [2021-12-06 21:37:20,710 INFO L226 Difference]: Without dead ends: 493 [2021-12-06 21:37:20,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:37:20,711 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 390 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:20,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 1419 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:37:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-06 21:37:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 462. [2021-12-06 21:37:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 419 states have internal predecessors, (512), 27 states have call successors, (27), 20 states have call predecessors, (27), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2021-12-06 21:37:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 566 transitions. [2021-12-06 21:37:20,739 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 566 transitions. Word has length 61 [2021-12-06 21:37:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:20,739 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 566 transitions. [2021-12-06 21:37:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 566 transitions. [2021-12-06 21:37:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 21:37:20,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:20,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:20,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 21:37:20,740 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1387725979, now seen corresponding path program 1 times [2021-12-06 21:37:20,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:20,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79112974] [2021-12-06 21:37:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:20,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 21:37:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 21:37:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:20,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:20,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79112974] [2021-12-06 21:37:20,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79112974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:20,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:37:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826085611] [2021-12-06 21:37:20,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:37:20,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:37:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:20,795 INFO L87 Difference]: Start difference. First operand 462 states and 566 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:37:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:21,001 INFO L93 Difference]: Finished difference Result 464 states and 567 transitions. [2021-12-06 21:37:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:37:21,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-12-06 21:37:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:21,003 INFO L225 Difference]: With dead ends: 464 [2021-12-06 21:37:21,003 INFO L226 Difference]: Without dead ends: 413 [2021-12-06 21:37:21,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:37:21,004 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 103 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:21,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1613 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:37:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-06 21:37:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2021-12-06 21:37:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2439024390243902) internal successors, (459), 374 states have internal predecessors, (459), 24 states have call successors, (24), 18 states have call predecessors, (24), 19 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-12-06 21:37:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 508 transitions. [2021-12-06 21:37:21,037 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 508 transitions. Word has length 62 [2021-12-06 21:37:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:21,037 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 508 transitions. [2021-12-06 21:37:21,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 21:37:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 508 transitions. [2021-12-06 21:37:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 21:37:21,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:21,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:21,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 21:37:21,039 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash -642482331, now seen corresponding path program 1 times [2021-12-06 21:37:21,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:21,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374137140] [2021-12-06 21:37:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:21,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 21:37:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:21,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374137140] [2021-12-06 21:37:21,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374137140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:21,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:21,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:37:21,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798947421] [2021-12-06 21:37:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:21,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:37:21,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:37:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:21,101 INFO L87 Difference]: Start difference. First operand 413 states and 508 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:21,283 INFO L93 Difference]: Finished difference Result 454 states and 553 transitions. [2021-12-06 21:37:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:37:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-12-06 21:37:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:21,285 INFO L225 Difference]: With dead ends: 454 [2021-12-06 21:37:21,285 INFO L226 Difference]: Without dead ends: 435 [2021-12-06 21:37:21,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:37:21,285 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 342 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:21,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1406 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-06 21:37:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 421. [2021-12-06 21:37:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 376 states have (on average 1.2393617021276595) internal successors, (466), 381 states have internal predecessors, (466), 24 states have call successors, (24), 18 states have call predecessors, (24), 20 states have return successors, (27), 22 states have call predecessors, (27), 21 states have call successors, (27) [2021-12-06 21:37:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 517 transitions. [2021-12-06 21:37:21,310 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 517 transitions. Word has length 63 [2021-12-06 21:37:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:21,311 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 517 transitions. [2021-12-06 21:37:21,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 517 transitions. [2021-12-06 21:37:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 21:37:21,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:21,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:21,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 21:37:21,313 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash -163812513, now seen corresponding path program 1 times [2021-12-06 21:37:21,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:21,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489689168] [2021-12-06 21:37:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:21,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 21:37:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 21:37:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:37:21,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:37:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489689168] [2021-12-06 21:37:21,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489689168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:21,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:21,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:37:21,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203249230] [2021-12-06 21:37:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:21,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:37:21,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:37:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:37:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:37:21,384 INFO L87 Difference]: Start difference. First operand 421 states and 517 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:21,560 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2021-12-06 21:37:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:37:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-12-06 21:37:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:21,563 INFO L225 Difference]: With dead ends: 454 [2021-12-06 21:37:21,563 INFO L226 Difference]: Without dead ends: 435 [2021-12-06 21:37:21,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:37:21,564 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 62 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:21,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1933 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:37:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-06 21:37:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 413. [2021-12-06 21:37:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2411924119241193) internal successors, (458), 374 states have internal predecessors, (458), 24 states have call successors, (24), 18 states have call predecessors, (24), 19 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-12-06 21:37:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 507 transitions. [2021-12-06 21:37:21,598 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 507 transitions. Word has length 64 [2021-12-06 21:37:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:21,598 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 507 transitions. [2021-12-06 21:37:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:37:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 507 transitions. [2021-12-06 21:37:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 21:37:21,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:21,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:21,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 21:37:21,599 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 335595526, now seen corresponding path program 1 times [2021-12-06 21:37:21,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:37:21,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940109904] [2021-12-06 21:37:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:21,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:37:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:37:21,611 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:37:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:37:21,653 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:37:21,654 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 21:37:21,654 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:37:21,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 21:37:21,658 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:21,660 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:37:21,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:37:21 BoogieIcfgContainer [2021-12-06 21:37:21,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:37:21,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:37:21,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:37:21,747 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:37:21,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:12" (3/4) ... [2021-12-06 21:37:21,749 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 21:37:21,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:37:21,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:37:21,827 INFO L158 Benchmark]: Toolchain (without parser) took 10046.85ms. Allocated memory was 71.3MB in the beginning and 234.9MB in the end (delta: 163.6MB). Free memory was 32.0MB in the beginning and 146.2MB in the end (delta: -114.2MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,827 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:37:21,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.95ms. Allocated memory was 71.3MB in the beginning and 109.1MB in the end (delta: 37.7MB). Free memory was 31.8MB in the beginning and 73.1MB in the end (delta: -41.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.45ms. Allocated memory is still 109.1MB. Free memory was 73.1MB in the beginning and 68.5MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,828 INFO L158 Benchmark]: Boogie Preprocessor took 39.28ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 64.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,828 INFO L158 Benchmark]: RCFGBuilder took 644.53ms. Allocated memory is still 109.1MB. Free memory was 64.8MB in the beginning and 56.3MB in the end (delta: 8.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,828 INFO L158 Benchmark]: TraceAbstraction took 8914.92ms. Allocated memory was 109.1MB in the beginning and 234.9MB in the end (delta: 125.8MB). Free memory was 55.7MB in the beginning and 165.0MB in the end (delta: -109.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,828 INFO L158 Benchmark]: Witness Printer took 79.31ms. Allocated memory is still 234.9MB. Free memory was 165.0MB in the beginning and 146.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 21:37:21,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.95ms. Allocated memory was 71.3MB in the beginning and 109.1MB in the end (delta: 37.7MB). Free memory was 31.8MB in the beginning and 73.1MB in the end (delta: -41.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.45ms. Allocated memory is still 109.1MB. Free memory was 73.1MB in the beginning and 68.5MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.28ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 64.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 644.53ms. Allocated memory is still 109.1MB. Free memory was 64.8MB in the beginning and 56.3MB in the end (delta: 8.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8914.92ms. Allocated memory was 109.1MB in the beginning and 234.9MB in the end (delta: 125.8MB). Free memory was 55.7MB in the beginning and 165.0MB in the end (delta: -109.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Witness Printer took 79.31ms. Allocated memory is still 234.9MB. Free memory was 165.0MB in the beginning and 146.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 65]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; VAL [compRegistered=0, customIrp=0, DC=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=0, MPR3=0, myStatus=0, NP=0, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L196] COND TRUE PagingReferenceCount == 1 VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L210] COND FALSE !(irpSp__MinorFunction == 0) VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L213] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L239] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=-1, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; VAL [\old(DisketteExtension)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ VAL [\old(DisketteExtension)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) VAL [\old(DisketteExtension)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L153] COND TRUE pended == 0 [L154] pended = 1 VAL [\old(DisketteExtension)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L160] return (259); VAL [\old(DisketteExtension)=0, \old(Irp)=0, \result=259, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L263] COND TRUE __cil_tmp29 == 259L VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1036] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1045] COND FALSE !(customIrp == 1) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1049] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_8=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1064] return (0); VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, \result=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_8=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0)=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L268] COND TRUE disketteExtension__FloppyThread != 0 VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L274] COND TRUE s == NP [L275] s = SKIP1 VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L944] COND FALSE !(\read(compRegistered)) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L970] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L983] COND FALSE !(s == NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L987] COND FALSE !(s == MPR1) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L1006] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, \result=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=-2, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IofCallDriver(disketteExtension__TargetObject, Irp)=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L431] COND TRUE PagingReferenceCount == 0 VAL [\old(DeviceObject)=-1, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L434] return (ntStatus); VAL [\old(DeviceObject)=-1, \old(Irp)=0, \result=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L751] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L758] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L759] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L766] COND TRUE s != UNLOADED VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L767] COND TRUE status != -1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L768] COND FALSE !(s != SKIP2) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L782] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L783] COND TRUE status != 259 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L784] CALL errorFn() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L65] reach_error() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 37, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6721 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6609 mSDsluCounter, 40836 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29856 mSDsCounter, 1057 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7679 IncrementalHoareTripleChecker+Invalid, 8736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1057 mSolverCounterUnsat, 10980 mSDtfsCounter, 7679 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred in iteration=12, InterpolantAutomatonStates: 247, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 36 MinimizatonAttempts, 1015 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1537 NumberOfCodeBlocks, 1537 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1435 ConstructedInterpolants, 0 QuantifiedInterpolants, 3638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 21:37:21,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55d288dc-c939-4a97-860a-bf5b49d86ed7/bin/uautomizer-DrprNOufMa/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