./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 11:44:46,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 11:44:46,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 11:44:46,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 11:44:46,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 11:44:46,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 11:44:46,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 11:44:46,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 11:44:46,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 11:44:46,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 11:44:46,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 11:44:46,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 11:44:46,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 11:44:46,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 11:44:46,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 11:44:46,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 11:44:46,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 11:44:46,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 11:44:46,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 11:44:46,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 11:44:46,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 11:44:46,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 11:44:46,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 11:44:46,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 11:44:46,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 11:44:46,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 11:44:46,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 11:44:46,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 11:44:46,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 11:44:46,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 11:44:46,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 11:44:46,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 11:44:46,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 11:44:46,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 11:44:46,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 11:44:46,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 11:44:46,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 11:44:46,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 11:44:46,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 11:44:46,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 11:44:46,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 11:44:46,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 11:44:46,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 11:44:46,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 11:44:46,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 11:44:46,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 11:44:46,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 11:44:46,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 11:44:46,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 11:44:46,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 11:44:46,173 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 11:44:46,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 11:44:46,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 11:44:46,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 11:44:46,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:44:46,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 11:44:46,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 11:44:46,177 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 11:44:46,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 11:44:46,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 11:44:46,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 11:44:46,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2021-12-14 11:44:46,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 11:44:46,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 11:44:46,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 11:44:46,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 11:44:46,421 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 11:44:46,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2021-12-14 11:44:46,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f6181fd3/d7516287500b4831b71a661db3cf0385/FLAGa48050414 [2021-12-14 11:44:47,032 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 11:44:47,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2021-12-14 11:44:47,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f6181fd3/d7516287500b4831b71a661db3cf0385/FLAGa48050414 [2021-12-14 11:44:47,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f6181fd3/d7516287500b4831b71a661db3cf0385 [2021-12-14 11:44:47,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 11:44:47,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 11:44:47,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 11:44:47,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 11:44:47,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 11:44:47,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:47" (1/1) ... [2021-12-14 11:44:47,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509dfcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:47, skipping insertion in model container [2021-12-14 11:44:47,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:47" (1/1) ... [2021-12-14 11:44:47,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 11:44:47,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 11:44:48,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2021-12-14 11:44:48,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:44:48,394 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 11:44:48,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2021-12-14 11:44:48,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:44:48,714 INFO L208 MainTranslator]: Completed translation [2021-12-14 11:44:48,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48 WrapperNode [2021-12-14 11:44:48,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 11:44:48,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 11:44:48,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 11:44:48,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 11:44:48,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:48,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:48,892 INFO L137 Inliner]: procedures = 126, calls = 2874, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3043 [2021-12-14 11:44:48,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 11:44:48,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 11:44:48,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 11:44:48,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 11:44:48,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:48,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:48,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:48,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:49,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:49,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:49,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:49,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 11:44:49,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 11:44:49,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 11:44:49,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 11:44:49,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (1/1) ... [2021-12-14 11:44:49,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:44:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:44:49,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 11:44:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 11:44:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2021-12-14 11:44:49,165 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2021-12-14 11:44:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 11:44:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 11:44:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 11:44:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 11:44:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-14 11:44:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-14 11:44:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 11:44:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 11:44:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-14 11:44:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-14 11:44:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-14 11:44:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-14 11:44:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 11:44:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-12-14 11:44:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-12-14 11:44:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-14 11:44:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-14 11:44:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2021-12-14 11:44:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2021-12-14 11:44:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 11:44:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 11:44:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-14 11:44:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-14 11:44:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-14 11:44:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-14 11:44:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2021-12-14 11:44:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2021-12-14 11:44:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 11:44:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 11:44:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-12-14 11:44:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-12-14 11:44:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2021-12-14 11:44:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2021-12-14 11:44:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 11:44:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 11:44:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-14 11:44:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-12-14 11:44:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-14 11:44:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 11:44:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2021-12-14 11:44:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2021-12-14 11:44:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 11:44:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-14 11:44:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-14 11:44:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 11:44:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 11:44:49,513 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 11:44:49,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 11:44:49,568 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-14 11:44:49,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-14 11:44:49,580 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,694 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-14 11:44:49,695 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-14 11:44:49,716 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,727 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-14 11:44:49,728 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-14 11:44:49,777 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-12-14 11:44:49,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-12-14 11:44:49,795 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,795 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,796 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-14 11:44:49,868 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-14 11:44:49,870 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,873 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:49,874 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,424 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-14 11:44:52,424 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-14 11:44:52,424 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-14 11:44:52,424 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-14 11:44:52,425 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2021-12-14 11:44:52,425 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2021-12-14 11:44:52,446 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,480 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-14 11:44:52,480 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-14 11:44:52,485 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,486 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,487 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,488 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,488 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,490 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,491 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:52,492 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:44:55,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2021-12-14 11:44:55,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2021-12-14 11:44:55,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2021-12-14 11:44:55,602 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 11:44:55,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 11:44:55,620 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-14 11:44:55,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:55 BoogieIcfgContainer [2021-12-14 11:44:55,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 11:44:55,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 11:44:55,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 11:44:55,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 11:44:55,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:44:47" (1/3) ... [2021-12-14 11:44:55,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9240bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:55, skipping insertion in model container [2021-12-14 11:44:55,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:48" (2/3) ... [2021-12-14 11:44:55,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9240bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:55, skipping insertion in model container [2021-12-14 11:44:55,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:55" (3/3) ... [2021-12-14 11:44:55,637 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2021-12-14 11:44:55,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 11:44:55,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 11:44:55,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 11:44:55,691 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 [2021-12-14 11:44:55,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 11:44:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2021-12-14 11:44:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 11:44:55,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:44:55,715 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] [2021-12-14 11:44:55,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:44:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:44:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2021-12-14 11:44:55,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:44:55,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303058402] [2021-12-14 11:44:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:55,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:44:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:44:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:44:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:44:56,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:44:56,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303058402] [2021-12-14 11:44:56,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303058402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:44:56,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:44:56,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:44:56,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021855125] [2021-12-14 11:44:56,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:44:56,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:44:56,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:44:56,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:44:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:44:56,319 INFO L87 Difference]: Start difference. First operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 11:45:00,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:00,292 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2021-12-14 11:45:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:00,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-12-14 11:45:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:00,305 INFO L225 Difference]: With dead ends: 1130 [2021-12-14 11:45:00,305 INFO L226 Difference]: Without dead ends: 639 [2021-12-14 11:45:00,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:00,313 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 393 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 226 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:00,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 2169 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-14 11:45:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-14 11:45:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2021-12-14 11:45:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4623893805309736) internal successors, (661), 483 states have internal predecessors, (661), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-14 11:45:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2021-12-14 11:45:00,385 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2021-12-14 11:45:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:00,386 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2021-12-14 11:45:00,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 11:45:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2021-12-14 11:45:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 11:45:00,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:00,387 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] [2021-12-14 11:45:00,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 11:45:00,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2021-12-14 11:45:00,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576771770] [2021-12-14 11:45:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:00,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:00,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:00,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:00,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576771770] [2021-12-14 11:45:00,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576771770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:00,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:00,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:45:00,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419642603] [2021-12-14 11:45:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:00,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:45:00,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:45:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:45:00,573 INFO L87 Difference]: Start difference. First operand 563 states and 818 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:04,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:04,479 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2021-12-14 11:45:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:45:04,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-12-14 11:45:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:04,484 INFO L225 Difference]: With dead ends: 1183 [2021-12-14 11:45:04,484 INFO L226 Difference]: Without dead ends: 639 [2021-12-14 11:45:04,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:45:04,486 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 359 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:04,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2829 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 822 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-14 11:45:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-14 11:45:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2021-12-14 11:45:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4601769911504425) internal successors, (660), 483 states have internal predecessors, (660), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-14 11:45:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2021-12-14 11:45:04,522 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2021-12-14 11:45:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:04,522 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2021-12-14 11:45:04,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2021-12-14 11:45:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 11:45:04,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:04,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:45:04,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 11:45:04,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2021-12-14 11:45:04,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:04,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946777693] [2021-12-14 11:45:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:04,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:04,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946777693] [2021-12-14 11:45:04,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946777693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:04,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:04,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:45:04,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284862347] [2021-12-14 11:45:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:04,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:45:04,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:45:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:45:04,757 INFO L87 Difference]: Start difference. First operand 563 states and 817 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:08,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:09,618 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2021-12-14 11:45:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:09,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-14 11:45:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:09,624 INFO L225 Difference]: With dead ends: 1494 [2021-12-14 11:45:09,624 INFO L226 Difference]: Without dead ends: 1093 [2021-12-14 11:45:09,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:09,626 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 1298 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 407 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:09,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2427 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 11:45:09,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-12-14 11:45:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2021-12-14 11:45:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 813 states have (on average 1.4452644526445264) internal successors, (1175), 840 states have internal predecessors, (1175), 124 states have call successors, (124), 38 states have call predecessors, (124), 41 states have return successors, (147), 108 states have call predecessors, (147), 109 states have call successors, (147) [2021-12-14 11:45:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2021-12-14 11:45:09,661 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2021-12-14 11:45:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:09,662 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2021-12-14 11:45:09,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2021-12-14 11:45:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 11:45:09,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:09,664 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] [2021-12-14 11:45:09,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 11:45:09,665 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2021-12-14 11:45:09,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:09,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459679831] [2021-12-14 11:45:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:09,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 11:45:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:09,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:09,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459679831] [2021-12-14 11:45:09,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459679831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:09,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:09,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:45:09,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694060781] [2021-12-14 11:45:09,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:09,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:45:09,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:45:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:45:09,909 INFO L87 Difference]: Start difference. First operand 979 states and 1446 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 11:45:13,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:14,527 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2021-12-14 11:45:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-12-14 11:45:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:14,534 INFO L225 Difference]: With dead ends: 1814 [2021-12-14 11:45:14,534 INFO L226 Difference]: Without dead ends: 1796 [2021-12-14 11:45:14,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:14,536 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1429 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 386 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:14,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 2048 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 740 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-12-14 11:45:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2021-12-14 11:45:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2021-12-14 11:45:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1311 states have (on average 1.4683447749809306) internal successors, (1925), 1356 states have internal predecessors, (1925), 189 states have call successors, (189), 61 states have call predecessors, (189), 68 states have return successors, (250), 164 states have call predecessors, (250), 174 states have call successors, (250) [2021-12-14 11:45:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2021-12-14 11:45:14,595 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2021-12-14 11:45:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:14,595 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2021-12-14 11:45:14,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 11:45:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2021-12-14 11:45:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 11:45:14,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:14,601 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] [2021-12-14 11:45:14,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 11:45:14,601 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2021-12-14 11:45:14,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383674056] [2021-12-14 11:45:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:14,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:14,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:14,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383674056] [2021-12-14 11:45:14,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383674056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:14,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:14,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:45:14,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932995941] [2021-12-14 11:45:14,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:45:14,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:45:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:45:14,896 INFO L87 Difference]: Start difference. First operand 1569 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:18,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:18,702 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2021-12-14 11:45:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-14 11:45:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:18,709 INFO L225 Difference]: With dead ends: 1793 [2021-12-14 11:45:18,709 INFO L226 Difference]: Without dead ends: 1789 [2021-12-14 11:45:18,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:18,710 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 460 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:18,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2047 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 689 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-12-14 11:45:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-12-14 11:45:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2021-12-14 11:45:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1342 states have (on average 1.4679582712369597) internal successors, (1970), 1384 states have internal predecessors, (1970), 190 states have call successors, (190), 63 states have call predecessors, (190), 69 states have return successors, (251), 165 states have call predecessors, (251), 175 states have call successors, (251) [2021-12-14 11:45:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2021-12-14 11:45:18,786 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2021-12-14 11:45:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:18,787 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2021-12-14 11:45:18,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2021-12-14 11:45:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 11:45:18,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:18,789 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] [2021-12-14 11:45:18,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 11:45:18,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2021-12-14 11:45:18,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:18,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185585091] [2021-12-14 11:45:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:18,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:18,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:18,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185585091] [2021-12-14 11:45:18,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185585091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:18,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:18,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:45:18,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948355089] [2021-12-14 11:45:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:18,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:45:18,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:45:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:45:18,934 INFO L87 Difference]: Start difference. First operand 1602 states and 2411 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:22,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:24,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:25,878 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2021-12-14 11:45:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:25,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-12-14 11:45:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:25,890 INFO L225 Difference]: With dead ends: 3169 [2021-12-14 11:45:25,890 INFO L226 Difference]: Without dead ends: 3166 [2021-12-14 11:45:25,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:25,892 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 901 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:25,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 2944 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1076 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-12-14 11:45:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-12-14 11:45:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2021-12-14 11:45:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2173 states have (on average 1.4832029452369995) internal successors, (3223), 2225 states have internal predecessors, (3223), 266 states have call successors, (266), 99 states have call predecessors, (266), 110 states have return successors, (392), 236 states have call predecessors, (392), 251 states have call successors, (392) [2021-12-14 11:45:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2021-12-14 11:45:25,965 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2021-12-14 11:45:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:25,965 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2021-12-14 11:45:25,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 11:45:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2021-12-14 11:45:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 11:45:25,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:25,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:45:25,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 11:45:25,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:25,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2021-12-14 11:45:25,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:25,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106745201] [2021-12-14 11:45:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:25,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 11:45:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:45:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:26,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:26,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106745201] [2021-12-14 11:45:26,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106745201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:26,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:26,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:45:26,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261843772] [2021-12-14 11:45:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:26,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:45:26,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:45:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:26,191 INFO L87 Difference]: Start difference. First operand 2550 states and 3881 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 11:45:30,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:31,809 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2021-12-14 11:45:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 11:45:31,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-12-14 11:45:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:31,860 INFO L225 Difference]: With dead ends: 3798 [2021-12-14 11:45:31,860 INFO L226 Difference]: Without dead ends: 3790 [2021-12-14 11:45:31,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-12-14 11:45:31,864 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 2650 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 1070 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:31,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 3214 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-12-14 11:45:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-12-14 11:45:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2021-12-14 11:45:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2670 states have (on average 1.4876404494382023) internal successors, (3972), 2741 states have internal predecessors, (3972), 332 states have call successors, (332), 116 states have call predecessors, (332), 136 states have return successors, (525), 292 states have call predecessors, (525), 317 states have call successors, (525) [2021-12-14 11:45:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2021-12-14 11:45:31,970 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2021-12-14 11:45:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:31,970 INFO L470 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2021-12-14 11:45:31,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 11:45:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2021-12-14 11:45:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 11:45:31,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:31,972 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] [2021-12-14 11:45:31,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 11:45:31,972 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2021-12-14 11:45:31,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:31,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516727625] [2021-12-14 11:45:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:31,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 11:45:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:32,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:32,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516727625] [2021-12-14 11:45:32,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516727625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:32,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:32,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:45:32,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538240572] [2021-12-14 11:45:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:32,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:45:32,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:45:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:45:32,199 INFO L87 Difference]: Start difference. First operand 3139 states and 4829 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 11:45:35,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:37,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:38,437 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2021-12-14 11:45:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:45:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2021-12-14 11:45:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:38,467 INFO L225 Difference]: With dead ends: 9987 [2021-12-14 11:45:38,467 INFO L226 Difference]: Without dead ends: 7066 [2021-12-14 11:45:38,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:38,483 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1297 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 339 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:38,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 2407 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 804 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-14 11:45:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2021-12-14 11:45:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2021-12-14 11:45:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 5324 states have (on average 1.5005634861006762) internal successors, (7989), 5487 states have internal predecessors, (7989), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2021-12-14 11:45:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2021-12-14 11:45:38,735 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2021-12-14 11:45:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:38,735 INFO L470 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2021-12-14 11:45:38,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 11:45:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2021-12-14 11:45:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 11:45:38,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:38,737 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] [2021-12-14 11:45:38,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 11:45:38,737 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2021-12-14 11:45:38,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:38,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932758742] [2021-12-14 11:45:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:38,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:38,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932758742] [2021-12-14 11:45:38,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932758742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:38,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:38,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:45:38,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268494492] [2021-12-14 11:45:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:38,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:45:38,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:45:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:45:38,986 INFO L87 Difference]: Start difference. First operand 6230 states and 9775 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 11:45:42,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:44,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:46,210 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2021-12-14 11:45:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 11:45:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2021-12-14 11:45:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:46,245 INFO L225 Difference]: With dead ends: 13181 [2021-12-14 11:45:46,245 INFO L226 Difference]: Without dead ends: 7261 [2021-12-14 11:45:46,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-14 11:45:46,264 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 2164 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 693 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:46,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2207 Valid, 2279 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1128 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-12-14 11:45:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2021-12-14 11:45:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2021-12-14 11:45:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4991533396048917) internal successors, (7968), 5478 states have internal predecessors, (7968), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2021-12-14 11:45:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2021-12-14 11:45:46,523 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2021-12-14 11:45:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:46,524 INFO L470 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2021-12-14 11:45:46,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 11:45:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2021-12-14 11:45:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 11:45:46,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:46,526 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] [2021-12-14 11:45:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 11:45:46,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash -703618871, now seen corresponding path program 1 times [2021-12-14 11:45:46,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260627798] [2021-12-14 11:45:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:46,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 11:45:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:45:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:46,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260627798] [2021-12-14 11:45:46,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260627798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:46,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:46,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:45:46,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358739122] [2021-12-14 11:45:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:46,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:45:46,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:45:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:45:46,799 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 11:45:50,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 11:45:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:45:52,730 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2021-12-14 11:45:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 11:45:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-12-14 11:45:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:45:52,778 INFO L225 Difference]: With dead ends: 7131 [2021-12-14 11:45:52,778 INFO L226 Difference]: Without dead ends: 7126 [2021-12-14 11:45:52,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-12-14 11:45:52,785 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 2455 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 925 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-14 11:45:52,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 3156 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 1986 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-12-14 11:45:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2021-12-14 11:45:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2021-12-14 11:45:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4989651928504233) internal successors, (7967), 5478 states have internal predecessors, (7967), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2021-12-14 11:45:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2021-12-14 11:45:53,048 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 48 [2021-12-14 11:45:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:45:53,049 INFO L470 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2021-12-14 11:45:53,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 11:45:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2021-12-14 11:45:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 11:45:53,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:45:53,051 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] [2021-12-14 11:45:53,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 11:45:53,051 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:45:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:45:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1527761131, now seen corresponding path program 1 times [2021-12-14 11:45:53,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:45:53,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34411547] [2021-12-14 11:45:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:45:53,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:45:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 11:45:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:45:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 11:45:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:45:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:45:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:45:53,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:45:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34411547] [2021-12-14 11:45:53,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34411547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:45:53,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:45:53,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:45:53,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338788645] [2021-12-14 11:45:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:45:53,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:45:53,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:45:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:45:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:45:53,395 INFO L87 Difference]: Start difference. First operand 6221 states and 9753 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 11:45:57,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []