./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:32:00,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:32:00,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:32:00,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:32:00,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:32:00,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:32:00,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:32:00,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:32:00,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:32:00,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:32:00,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:32:00,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:32:00,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:32:00,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:32:00,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:32:00,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:32:00,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:32:00,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:32:00,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:32:00,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:32:00,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:32:00,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:32:00,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:32:00,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:32:00,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:32:00,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:32:00,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:32:00,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:32:00,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:32:00,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:32:00,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:32:00,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:32:00,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:32:00,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:32:00,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:32:00,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:32:00,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:32:00,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:32:00,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:32:00,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:32:00,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:32:00,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:32:00,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:32:00,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:32:00,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:32:00,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:32:00,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:32:00,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:32:00,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:32:00,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:32:00,340 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:32:00,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:32:00,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:32:00,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:32:00,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:32:00,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:32:00,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:32:00,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:32:00,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:32:00,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:32:00,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:32:00,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:32:00,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:32:00,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:32:00,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:32:00,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:32:00,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:32:00,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:32:00,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:32:00,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:32:00,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:32:00,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:32:00,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:32:00,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-12-21 16:32:00,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:32:00,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:32:00,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:32:00,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:32:00,543 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:32:00,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-21 16:32:00,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b62971d2/c465589005d84e14b2212ad62816ac28/FLAGb8569641b [2021-12-21 16:32:01,190 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:32:01,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-21 16:32:01,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b62971d2/c465589005d84e14b2212ad62816ac28/FLAGb8569641b [2021-12-21 16:32:01,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b62971d2/c465589005d84e14b2212ad62816ac28 [2021-12-21 16:32:01,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:32:01,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:32:01,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:32:01,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:32:01,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:32:01,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:32:01" (1/1) ... [2021-12-21 16:32:01,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3944f15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:01, skipping insertion in model container [2021-12-21 16:32:01,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:32:01" (1/1) ... [2021-12-21 16:32:01,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:32:01,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:32:02,422 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-12-21 16:32:02,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:32:02,504 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:32:02,735 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-12-21 16:32:02,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:32:02,860 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:32:02,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02 WrapperNode [2021-12-21 16:32:02,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:32:02,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:32:02,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:32:02,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:32:02,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:02,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,041 INFO L137 Inliner]: procedures = 199, calls = 2183, calls flagged for inlining = 73, calls inlined = 51, statements flattened = 3134 [2021-12-21 16:32:03,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:32:03,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:32:03,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:32:03,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:32:03,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:32:03,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:32:03,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:32:03,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:32:03,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (1/1) ... [2021-12-21 16:32:03,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:32:03,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:32:03,225 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) [2021-12-21 16:32:03,243 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 [2021-12-21 16:32:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 16:32:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 16:32:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-21 16:32:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-21 16:32:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-21 16:32:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:32:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:32:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:32:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:32:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 16:32:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 16:32:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:32:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:32:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-12-21 16:32:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-12-21 16:32:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:32:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:32:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:32:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:32:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-21 16:32:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-21 16:32:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:32:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:32:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_resume [2021-12-21 16:32:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_resume [2021-12-21 16:32:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 16:32:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 16:32:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:32:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:32:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:32:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:32:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:32:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:32:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-12-21 16:32:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-12-21 16:32:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-21 16:32:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-21 16:32:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_send_address [2021-12-21 16:32:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_send_address [2021-12-21 16:32:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-21 16:32:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-21 16:32:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:32:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_wait [2021-12-21 16:32:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_wait [2021-12-21 16:32:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_remove [2021-12-21 16:32:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_remove [2021-12-21 16:32:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:32:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:32:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:32:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:32:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:32:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:32:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-21 16:32:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-21 16:32:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:32:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_write [2021-12-21 16:32:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_write [2021-12-21 16:32:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:32:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_ready [2021-12-21 16:32:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_ready [2021-12-21 16:32:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:32:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_suspend [2021-12-21 16:32:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_suspend [2021-12-21 16:32:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_read [2021-12-21 16:32:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_read [2021-12-21 16:32:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_probe [2021-12-21 16:32:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_probe [2021-12-21 16:32:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-21 16:32:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-21 16:32:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-21 16:32:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-21 16:32:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:32:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-21 16:32:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-21 16:32:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:32:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:32:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:32:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:32:03,592 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:32:03,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:32:11,549 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:32:12,286 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:32:12,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:32:12,300 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:32:12,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:32:12 BoogieIcfgContainer [2021-12-21 16:32:12,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:32:12,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:32:12,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:32:12,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:32:12,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:32:01" (1/3) ... [2021-12-21 16:32:12,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc58a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:32:12, skipping insertion in model container [2021-12-21 16:32:12,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:32:02" (2/3) ... [2021-12-21 16:32:12,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc58a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:32:12, skipping insertion in model container [2021-12-21 16:32:12,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:32:12" (3/3) ... [2021-12-21 16:32:12,310 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-21 16:32:12,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:32:12,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:32:12,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:32:12,360 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 [2021-12-21 16:32:12,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:32:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-21 16:32:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 16:32:12,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:12,402 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] [2021-12-21 16:32:12,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 392482652, now seen corresponding path program 1 times [2021-12-21 16:32:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:12,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370391652] [2021-12-21 16:32:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:12,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:12,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370391652] [2021-12-21 16:32:12,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370391652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:12,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:12,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:32:12,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651351952] [2021-12-21 16:32:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:12,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:32:12,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:32:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:32:12,853 INFO L87 Difference]: Start difference. First operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:13,088 INFO L93 Difference]: Finished difference Result 2181 states and 3329 transitions. [2021-12-21 16:32:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:32:13,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-21 16:32:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:13,109 INFO L225 Difference]: With dead ends: 2181 [2021-12-21 16:32:13,110 INFO L226 Difference]: Without dead ends: 1419 [2021-12-21 16:32:13,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:32:13,125 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 1087 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:13,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2303 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:32:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-12-21 16:32:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1415. [2021-12-21 16:32:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1096 states have (on average 1.4753649635036497) internal successors, (1617), 1108 states have internal predecessors, (1617), 258 states have call successors, (258), 61 states have call predecessors, (258), 60 states have return successors, (253), 253 states have call predecessors, (253), 253 states have call successors, (253) [2021-12-21 16:32:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2128 transitions. [2021-12-21 16:32:13,247 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2128 transitions. Word has length 21 [2021-12-21 16:32:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:13,248 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2128 transitions. [2021-12-21 16:32:13,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2128 transitions. [2021-12-21 16:32:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 16:32:13,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:13,255 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] [2021-12-21 16:32:13,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:32:13,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1015935201, now seen corresponding path program 1 times [2021-12-21 16:32:13,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:13,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085016036] [2021-12-21 16:32:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:13,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:32:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:13,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085016036] [2021-12-21 16:32:13,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085016036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:13,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:13,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:32:13,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084414171] [2021-12-21 16:32:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:13,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:32:13,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:32:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:32:13,364 INFO L87 Difference]: Start difference. First operand 1415 states and 2128 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:13,544 INFO L93 Difference]: Finished difference Result 3978 states and 5978 transitions. [2021-12-21 16:32:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:32:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-21 16:32:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:13,557 INFO L225 Difference]: With dead ends: 3978 [2021-12-21 16:32:13,557 INFO L226 Difference]: Without dead ends: 2566 [2021-12-21 16:32:13,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:32:13,564 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 904 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:13,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 2288 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:32:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-12-21 16:32:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2549. [2021-12-21 16:32:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 1962 states have (on average 1.4658511722731906) internal successors, (2876), 1982 states have internal predecessors, (2876), 481 states have call successors, (481), 106 states have call predecessors, (481), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-21 16:32:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3833 transitions. [2021-12-21 16:32:13,638 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3833 transitions. Word has length 24 [2021-12-21 16:32:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:13,639 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3833 transitions. [2021-12-21 16:32:13,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3833 transitions. [2021-12-21 16:32:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 16:32:13,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:13,640 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] [2021-12-21 16:32:13,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:32:13,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2094049435, now seen corresponding path program 1 times [2021-12-21 16:32:13,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:13,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687399676] [2021-12-21 16:32:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:13,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:13,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687399676] [2021-12-21 16:32:13,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687399676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:13,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:13,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:32:13,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319807343] [2021-12-21 16:32:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:13,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:32:13,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:32:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:32:13,762 INFO L87 Difference]: Start difference. First operand 2549 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:15,033 INFO L93 Difference]: Finished difference Result 2559 states and 3854 transitions. [2021-12-21 16:32:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:32:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-21 16:32:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:15,044 INFO L225 Difference]: With dead ends: 2559 [2021-12-21 16:32:15,044 INFO L226 Difference]: Without dead ends: 2556 [2021-12-21 16:32:15,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:32:15,046 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 1064 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:15,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1803 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:32:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-21 16:32:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2548. [2021-12-21 16:32:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1962 states have (on average 1.4653414882772682) internal successors, (2875), 1981 states have internal predecessors, (2875), 480 states have call successors, (480), 106 states have call predecessors, (480), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-21 16:32:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3831 transitions. [2021-12-21 16:32:15,106 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3831 transitions. Word has length 25 [2021-12-21 16:32:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:15,107 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 3831 transitions. [2021-12-21 16:32:15,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3831 transitions. [2021-12-21 16:32:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-21 16:32:15,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:15,108 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] [2021-12-21 16:32:15,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:32:15,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash -491175993, now seen corresponding path program 1 times [2021-12-21 16:32:15,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:15,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076469582] [2021-12-21 16:32:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:15,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:15,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:15,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076469582] [2021-12-21 16:32:15,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076469582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:15,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:15,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:32:15,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123506271] [2021-12-21 16:32:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:15,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:32:15,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:32:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:32:15,248 INFO L87 Difference]: Start difference. First operand 2548 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:16,513 INFO L93 Difference]: Finished difference Result 2558 states and 3852 transitions. [2021-12-21 16:32:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:32:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-21 16:32:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:16,522 INFO L225 Difference]: With dead ends: 2558 [2021-12-21 16:32:16,522 INFO L226 Difference]: Without dead ends: 2555 [2021-12-21 16:32:16,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:32:16,524 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 1061 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:16,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1800 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:32:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-12-21 16:32:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2547. [2021-12-21 16:32:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1962 states have (on average 1.4648318042813455) internal successors, (2874), 1980 states have internal predecessors, (2874), 479 states have call successors, (479), 106 states have call predecessors, (479), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-21 16:32:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3829 transitions. [2021-12-21 16:32:16,584 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3829 transitions. Word has length 26 [2021-12-21 16:32:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:16,584 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3829 transitions. [2021-12-21 16:32:16,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3829 transitions. [2021-12-21 16:32:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 16:32:16,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:16,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:32:16,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:32:16,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1953265320, now seen corresponding path program 1 times [2021-12-21 16:32:16,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:16,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905281036] [2021-12-21 16:32:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:16,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:16,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:16,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905281036] [2021-12-21 16:32:16,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905281036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:16,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:16,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:32:16,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255832516] [2021-12-21 16:32:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:16,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:32:16,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:32:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:32:16,706 INFO L87 Difference]: Start difference. First operand 2547 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:18,991 INFO L93 Difference]: Finished difference Result 7585 states and 11451 transitions. [2021-12-21 16:32:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:32:18,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-21 16:32:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:19,015 INFO L225 Difference]: With dead ends: 7585 [2021-12-21 16:32:19,016 INFO L226 Difference]: Without dead ends: 5029 [2021-12-21 16:32:19,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:32:19,027 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 1126 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:19,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2910 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 16:32:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-12-21 16:32:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5004. [2021-12-21 16:32:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3857 states have (on average 1.467461757842883) internal successors, (5660), 3900 states have internal predecessors, (5660), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-21 16:32:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7548 transitions. [2021-12-21 16:32:19,197 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7548 transitions. Word has length 27 [2021-12-21 16:32:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:19,197 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 7548 transitions. [2021-12-21 16:32:19,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 16:32:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7548 transitions. [2021-12-21 16:32:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-21 16:32:19,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:19,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:32:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:32:19,204 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1400463080, now seen corresponding path program 1 times [2021-12-21 16:32:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197360050] [2021-12-21 16:32:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:19,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 16:32:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:32:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:32:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:32:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:32:19,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197360050] [2021-12-21 16:32:19,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197360050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:19,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:19,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:32:19,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466200021] [2021-12-21 16:32:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:19,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:32:19,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:32:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:32:19,409 INFO L87 Difference]: Start difference. First operand 5004 states and 7548 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 16:32:24,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:26,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:28,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:30,316 INFO L93 Difference]: Finished difference Result 10466 states and 15931 transitions. [2021-12-21 16:32:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:32:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-12-21 16:32:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:30,342 INFO L225 Difference]: With dead ends: 10466 [2021-12-21 16:32:30,343 INFO L226 Difference]: Without dead ends: 5461 [2021-12-21 16:32:30,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:32:30,357 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 182 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 154 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:30,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5092 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1075 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-12-21 16:32:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-12-21 16:32:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 5006. [2021-12-21 16:32:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 3859 states have (on average 1.4661829489505054) internal successors, (5658), 3902 states have internal predecessors, (5658), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-21 16:32:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7546 transitions. [2021-12-21 16:32:30,501 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7546 transitions. Word has length 77 [2021-12-21 16:32:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:30,502 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 7546 transitions. [2021-12-21 16:32:30,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 16:32:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7546 transitions. [2021-12-21 16:32:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 16:32:30,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:30,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:32:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:32:30,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1710126176, now seen corresponding path program 1 times [2021-12-21 16:32:30,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:30,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5004929] [2021-12-21 16:32:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:30,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:32:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:32:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 16:32:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:32:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 16:32:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:32:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:32:30,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:30,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5004929] [2021-12-21 16:32:30,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5004929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:30,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:30,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:32:30,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542228205] [2021-12-21 16:32:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:30,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:32:30,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:32:30,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:32:30,763 INFO L87 Difference]: Start difference. First operand 5006 states and 7546 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:32:35,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:37,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:39,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:41,052 INFO L93 Difference]: Finished difference Result 11182 states and 17097 transitions. [2021-12-21 16:32:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:32:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2021-12-21 16:32:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:41,089 INFO L225 Difference]: With dead ends: 11182 [2021-12-21 16:32:41,089 INFO L226 Difference]: Without dead ends: 6179 [2021-12-21 16:32:41,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:32:41,105 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 728 mSDsluCounter, 3845 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 339 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 5198 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:41,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 5198 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 842 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2021-12-21 16:32:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2021-12-21 16:32:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 5014. [2021-12-21 16:32:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 3867 states have (on average 1.465218515645203) internal successors, (5666), 3910 states have internal predecessors, (5666), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-21 16:32:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7554 transitions. [2021-12-21 16:32:41,251 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7554 transitions. Word has length 104 [2021-12-21 16:32:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:41,252 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 7554 transitions. [2021-12-21 16:32:41,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:32:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7554 transitions. [2021-12-21 16:32:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-21 16:32:41,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:41,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:32:41,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:32:41,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1744883690, now seen corresponding path program 1 times [2021-12-21 16:32:41,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:41,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888558793] [2021-12-21 16:32:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:41,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:32:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:32:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:32:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:32:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:32:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:32:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:32:41,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888558793] [2021-12-21 16:32:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888558793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:41,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:41,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:32:41,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723233772] [2021-12-21 16:32:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:41,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:32:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:32:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:32:41,456 INFO L87 Difference]: Start difference. First operand 5014 states and 7554 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 16:32:44,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:46,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:48,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:32:49,945 INFO L93 Difference]: Finished difference Result 10407 states and 16031 transitions. [2021-12-21 16:32:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:32:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2021-12-21 16:32:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:32:49,964 INFO L225 Difference]: With dead ends: 10407 [2021-12-21 16:32:49,965 INFO L226 Difference]: Without dead ends: 5396 [2021-12-21 16:32:49,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:32:49,982 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 1187 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 463 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:32:49,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2274 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 513 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-12-21 16:32:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-12-21 16:32:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4990. [2021-12-21 16:32:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3851 states have (on average 1.3996364580628409) internal successors, (5390), 3894 states have internal predecessors, (5390), 941 states have call successors, (941), 205 states have call predecessors, (941), 197 states have return successors, (931), 922 states have call predecessors, (931), 931 states have call successors, (931) [2021-12-21 16:32:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 7262 transitions. [2021-12-21 16:32:50,158 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 7262 transitions. Word has length 102 [2021-12-21 16:32:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:32:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 4990 states and 7262 transitions. [2021-12-21 16:32:50,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 16:32:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 7262 transitions. [2021-12-21 16:32:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 16:32:50,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:32:50,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:32:50,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:32:50,162 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:32:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:32:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1621242927, now seen corresponding path program 1 times [2021-12-21 16:32:50,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:32:50,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669119784] [2021-12-21 16:32:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:32:50,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:32:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:32:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:32:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:32:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 16:32:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:32:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:32:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:32:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:32:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:32:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:32:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:32:50,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:32:50,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669119784] [2021-12-21 16:32:50,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669119784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:32:50,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:32:50,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:32:50,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758487127] [2021-12-21 16:32:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:32:50,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:32:50,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:32:50,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:32:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:32:50,353 INFO L87 Difference]: Start difference. First operand 4990 states and 7262 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 16:32:55,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:32:58,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:33:00,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:33:02,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:33:04,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:33:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:33:06,583 INFO L93 Difference]: Finished difference Result 15758 states and 23270 transitions. [2021-12-21 16:33:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:33:06,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2021-12-21 16:33:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:33:06,626 INFO L225 Difference]: With dead ends: 15758 [2021-12-21 16:33:06,626 INFO L226 Difference]: Without dead ends: 10771 [2021-12-21 16:33:06,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:33:06,671 INFO L933 BasicCegarLoop]: 1655 mSDtfsCounter, 1277 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 543 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:33:06,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 4611 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1085 Invalid, 5 Unknown, 0 Unchecked, 15.9s Time] [2021-12-21 16:33:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-12-21 16:33:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9936. [2021-12-21 16:33:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9936 states, 7665 states have (on average 1.3993476842791912) internal successors, (10726), 7750 states have internal predecessors, (10726), 1877 states have call successors, (1877), 407 states have call predecessors, (1877), 393 states have return successors, (1861), 1842 states have call predecessors, (1861), 1861 states have call successors, (1861) [2021-12-21 16:33:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9936 states to 9936 states and 14464 transitions. [2021-12-21 16:33:07,165 INFO L78 Accepts]: Start accepts. Automaton has 9936 states and 14464 transitions. Word has length 108 [2021-12-21 16:33:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:33:07,165 INFO L470 AbstractCegarLoop]: Abstraction has 9936 states and 14464 transitions. [2021-12-21 16:33:07,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 16:33:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9936 states and 14464 transitions. [2021-12-21 16:33:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 16:33:07,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:33:07,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:33:07,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:33:07,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:33:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:33:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1012080502, now seen corresponding path program 1 times [2021-12-21 16:33:07,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:33:07,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160230404] [2021-12-21 16:33:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:33:07,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:33:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:33:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-21 16:33:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:33:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:33:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:33:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:33:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 16:33:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 16:33:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:33:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:33:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:33:07,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:33:07,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160230404] [2021-12-21 16:33:07,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160230404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:33:07,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:33:07,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:33:07,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691060075] [2021-12-21 16:33:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:33:07,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:33:07,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:33:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:33:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:33:07,372 INFO L87 Difference]: Start difference. First operand 9936 states and 14464 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)