./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.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 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:31:07,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:31:07,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:31:07,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:31:07,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:31:07,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:31:07,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:31:07,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:31:07,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:31:07,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:31:07,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:31:07,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:31:07,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:31:07,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:31:07,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:31:07,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:31:07,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:31:07,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:31:07,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:31:07,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:31:07,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:31:07,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:31:07,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:31:07,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:31:07,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:31:07,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:31:07,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:31:07,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:31:07,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:31:07,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:31:07,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:31:07,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:31:07,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:31:07,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:31:07,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:31:07,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:31:07,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:31:07,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:31:07,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:31:07,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:31:07,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:31:07,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:31:07,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:31:07,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:31:07,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:31:07,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:31:07,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:31:07,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:31:07,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:31:07,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:31:07,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:31:07,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:31:07,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:31:07,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:31:07,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:31:07,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:31:07,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:31:07,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:31:07,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:31:07,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:31:07,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:31:07,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2021-12-22 14:31:07,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:31:07,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:31:07,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:31:07,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:31:07,702 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:31:07,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-22 14:31:07,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823c2ef08/8480a50ca1534b4098c75c956d9ed413/FLAG3ac2b1c19 [2021-12-22 14:31:08,334 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:31:08,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-22 14:31:08,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823c2ef08/8480a50ca1534b4098c75c956d9ed413/FLAG3ac2b1c19 [2021-12-22 14:31:08,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823c2ef08/8480a50ca1534b4098c75c956d9ed413 [2021-12-22 14:31:08,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:31:08,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:31:08,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:31:08,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:31:08,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:31:08,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:31:08" (1/1) ... [2021-12-22 14:31:08,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6763c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:08, skipping insertion in model container [2021-12-22 14:31:08,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:31:08" (1/1) ... [2021-12-22 14:31:08,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:31:08,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:31:10,138 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-22 14:31:10,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:31:10,255 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:31:10,525 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-22 14:31:10,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:31:10,600 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:31:10,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10 WrapperNode [2021-12-22 14:31:10,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:31:10,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:31:10,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:31:10,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:31:10,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,788 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4880 [2021-12-22 14:31:10,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:31:10,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:31:10,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:31:10,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:31:10,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:10,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:11,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:31:11,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:31:11,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:31:11,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:31:11,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (1/1) ... [2021-12-22 14:31:11,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:31:11,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:31:11,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:31:11,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2021-12-22 14:31:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2021-12-22 14:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-22 14:31:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-22 14:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2021-12-22 14:31:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2021-12-22 14:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2021-12-22 14:31:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2021-12-22 14:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2021-12-22 14:31:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2021-12-22 14:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:31:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-22 14:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2021-12-22 14:31:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2021-12-22 14:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2021-12-22 14:31:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2021-12-22 14:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-22 14:31:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-22 14:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-22 14:31:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-22 14:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:31:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2021-12-22 14:31:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2021-12-22 14:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-22 14:31:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-22 14:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:31:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:31:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2021-12-22 14:31:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2021-12-22 14:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2021-12-22 14:31:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2021-12-22 14:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2021-12-22 14:31:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2021-12-22 14:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-22 14:31:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-22 14:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2021-12-22 14:31:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2021-12-22 14:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2021-12-22 14:31:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2021-12-22 14:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:31:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2021-12-22 14:31:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2021-12-22 14:31:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:31:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-22 14:31:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-22 14:31:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2021-12-22 14:31:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2021-12-22 14:31:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2021-12-22 14:31:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2021-12-22 14:31:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:31:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-22 14:31:11,075 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-22 14:31:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2021-12-22 14:31:11,075 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2021-12-22 14:31:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:31:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:31:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2021-12-22 14:31:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2021-12-22 14:31:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2021-12-22 14:31:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2021-12-22 14:31:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2021-12-22 14:31:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2021-12-22 14:31:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-22 14:31:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-22 14:31:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:31:11,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:31:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:31:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:31:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:31:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:31:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-22 14:31:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-22 14:31:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-22 14:31:11,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-22 14:31:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:31:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:31:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:31:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2021-12-22 14:31:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2021-12-22 14:31:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:31:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2021-12-22 14:31:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2021-12-22 14:31:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2021-12-22 14:31:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2021-12-22 14:31:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:31:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2021-12-22 14:31:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2021-12-22 14:31:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2021-12-22 14:31:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2021-12-22 14:31:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:31:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:31:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:31:11,080 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:31:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-22 14:31:11,080 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-22 14:31:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:31:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-22 14:31:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-22 14:31:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2021-12-22 14:31:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2021-12-22 14:31:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-22 14:31:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-22 14:31:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:31:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:31:11,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:31:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:31:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2021-12-22 14:31:11,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2021-12-22 14:31:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:31:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:31:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:31:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:31:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2021-12-22 14:31:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2021-12-22 14:31:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:31:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:31:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:31:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:31:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2021-12-22 14:31:11,095 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2021-12-22 14:31:11,096 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2021-12-22 14:31:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:31:11,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:31:11,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:31:11,627 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:31:11,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:31:21,509 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:31:21,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:31:21,527 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 14:31:21,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:31:21 BoogieIcfgContainer [2021-12-22 14:31:21,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:31:21,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:31:21,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:31:21,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:31:21,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:31:08" (1/3) ... [2021-12-22 14:31:21,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e14c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:31:21, skipping insertion in model container [2021-12-22 14:31:21,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:10" (2/3) ... [2021-12-22 14:31:21,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e14c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:31:21, skipping insertion in model container [2021-12-22 14:31:21,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:31:21" (3/3) ... [2021-12-22 14:31:21,535 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-22 14:31:21,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:31:21,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:31:21,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:31:21,585 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:31:21,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:31:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2021-12-22 14:31:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 14:31:21,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:21,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:21,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -818407598, now seen corresponding path program 1 times [2021-12-22 14:31:21,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213558278] [2021-12-22 14:31:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:21,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:22,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:22,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213558278] [2021-12-22 14:31:22,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213558278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:22,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:22,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:22,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054977718] [2021-12-22 14:31:22,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:22,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:22,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,059 INFO L87 Difference]: Start difference. First operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:22,244 INFO L93 Difference]: Finished difference Result 3807 states and 5554 transitions. [2021-12-22 14:31:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 14:31:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:22,272 INFO L225 Difference]: With dead ends: 3807 [2021-12-22 14:31:22,272 INFO L226 Difference]: Without dead ends: 2471 [2021-12-22 14:31:22,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,285 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1619 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:22,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 4064 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-22 14:31:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2453. [2021-12-22 14:31:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1894 states have (on average 1.3875395987328405) internal successors, (2628), 1929 states have internal predecessors, (2628), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2021-12-22 14:31:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3479 transitions. [2021-12-22 14:31:22,449 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3479 transitions. Word has length 17 [2021-12-22 14:31:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:22,449 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3479 transitions. [2021-12-22 14:31:22,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3479 transitions. [2021-12-22 14:31:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 14:31:22,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:22,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:22,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:31:22,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1284284555, now seen corresponding path program 1 times [2021-12-22 14:31:22,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981724483] [2021-12-22 14:31:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:22,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:22,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:22,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981724483] [2021-12-22 14:31:22,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981724483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:22,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:22,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:22,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763826413] [2021-12-22 14:31:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:22,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:22,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,577 INFO L87 Difference]: Start difference. First operand 2453 states and 3479 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:22,650 INFO L93 Difference]: Finished difference Result 2612 states and 3691 transitions. [2021-12-22 14:31:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:22,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 14:31:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:22,664 INFO L225 Difference]: With dead ends: 2612 [2021-12-22 14:31:22,664 INFO L226 Difference]: Without dead ends: 2608 [2021-12-22 14:31:22,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,672 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 1266 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:22,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-12-22 14:31:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2606. [2021-12-22 14:31:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2032 states have (on average 1.391240157480315) internal successors, (2827), 2067 states have internal predecessors, (2827), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-22 14:31:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3684 transitions. [2021-12-22 14:31:22,747 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3684 transitions. Word has length 19 [2021-12-22 14:31:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:22,748 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3684 transitions. [2021-12-22 14:31:22,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3684 transitions. [2021-12-22 14:31:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 14:31:22,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:22,754 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] [2021-12-22 14:31:22,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:31:22,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:22,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:22,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1157630563, now seen corresponding path program 1 times [2021-12-22 14:31:22,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:22,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782188665] [2021-12-22 14:31:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:22,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:22,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782188665] [2021-12-22 14:31:22,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782188665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:22,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:22,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:22,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438549602] [2021-12-22 14:31:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:22,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:22,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,881 INFO L87 Difference]: Start difference. First operand 2606 states and 3684 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:22,946 INFO L93 Difference]: Finished difference Result 2608 states and 3685 transitions. [2021-12-22 14:31:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:22,947 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-22 14:31:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:22,957 INFO L225 Difference]: With dead ends: 2608 [2021-12-22 14:31:22,957 INFO L226 Difference]: Without dead ends: 2605 [2021-12-22 14:31:22,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:22,963 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 1859 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:22,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 1875 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2021-12-22 14:31:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2021-12-22 14:31:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2032 states have (on average 1.390748031496063) internal successors, (2826), 2066 states have internal predecessors, (2826), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-22 14:31:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3682 transitions. [2021-12-22 14:31:23,039 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3682 transitions. Word has length 20 [2021-12-22 14:31:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:23,039 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 3682 transitions. [2021-12-22 14:31:23,039 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3682 transitions. [2021-12-22 14:31:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 14:31:23,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:23,041 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] [2021-12-22 14:31:23,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:31:23,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1526328974, now seen corresponding path program 1 times [2021-12-22 14:31:23,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:23,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780773871] [2021-12-22 14:31:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:23,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:23,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:23,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780773871] [2021-12-22 14:31:23,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780773871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:23,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:23,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894202043] [2021-12-22 14:31:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:23,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:23,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:23,156 INFO L87 Difference]: Start difference. First operand 2605 states and 3682 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:23,290 INFO L93 Difference]: Finished difference Result 7785 states and 11083 transitions. [2021-12-22 14:31:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 14:31:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:23,315 INFO L225 Difference]: With dead ends: 7785 [2021-12-22 14:31:23,315 INFO L226 Difference]: Without dead ends: 5183 [2021-12-22 14:31:23,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:23,331 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 1861 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:23,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:23,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2021-12-22 14:31:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5171. [2021-12-22 14:31:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4040 states have (on average 1.391089108910891) internal successors, (5620), 4107 states have internal predecessors, (5620), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-22 14:31:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 7352 transitions. [2021-12-22 14:31:23,530 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 7352 transitions. Word has length 21 [2021-12-22 14:31:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:23,531 INFO L470 AbstractCegarLoop]: Abstraction has 5171 states and 7352 transitions. [2021-12-22 14:31:23,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 7352 transitions. [2021-12-22 14:31:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 14:31:23,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:23,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:23,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:31:23,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash 71082694, now seen corresponding path program 1 times [2021-12-22 14:31:23,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093606641] [2021-12-22 14:31:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:23,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:23,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:23,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093606641] [2021-12-22 14:31:23,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093606641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:23,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:23,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:23,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801433405] [2021-12-22 14:31:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:23,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:23,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:23,614 INFO L87 Difference]: Start difference. First operand 5171 states and 7352 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:23,700 INFO L93 Difference]: Finished difference Result 5173 states and 7353 transitions. [2021-12-22 14:31:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:23,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 14:31:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:23,722 INFO L225 Difference]: With dead ends: 5173 [2021-12-22 14:31:23,722 INFO L226 Difference]: Without dead ends: 5170 [2021-12-22 14:31:23,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:23,727 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1855 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:23,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 1873 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-12-22 14:31:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 5170. [2021-12-22 14:31:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 4040 states have (on average 1.3908415841584159) internal successors, (5619), 4106 states have internal predecessors, (5619), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-22 14:31:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7350 transitions. [2021-12-22 14:31:23,878 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7350 transitions. Word has length 22 [2021-12-22 14:31:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:23,878 INFO L470 AbstractCegarLoop]: Abstraction has 5170 states and 7350 transitions. [2021-12-22 14:31:23,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7350 transitions. [2021-12-22 14:31:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 14:31:23,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:23,879 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] [2021-12-22 14:31:23,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:31:23,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2091874159, now seen corresponding path program 1 times [2021-12-22 14:31:23,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:23,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355819499] [2021-12-22 14:31:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:23,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:24,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:24,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355819499] [2021-12-22 14:31:24,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355819499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:24,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:24,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:24,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691780014] [2021-12-22 14:31:24,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:24,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:24,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:24,017 INFO L87 Difference]: Start difference. First operand 5170 states and 7350 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:24,109 INFO L93 Difference]: Finished difference Result 5172 states and 7351 transitions. [2021-12-22 14:31:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-22 14:31:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:24,134 INFO L225 Difference]: With dead ends: 5172 [2021-12-22 14:31:24,134 INFO L226 Difference]: Without dead ends: 5158 [2021-12-22 14:31:24,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:24,140 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1852 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:24,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 1872 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:31:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-12-22 14:31:24,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5158. [2021-12-22 14:31:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4031 states have (on average 1.3904738278342843) internal successors, (5605), 4095 states have internal predecessors, (5605), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2021-12-22 14:31:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7331 transitions. [2021-12-22 14:31:24,290 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7331 transitions. Word has length 23 [2021-12-22 14:31:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:24,290 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 7331 transitions. [2021-12-22 14:31:24,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:31:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7331 transitions. [2021-12-22 14:31:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 14:31:24,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:24,293 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-22 14:31:24,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:31:24,293 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash -95947495, now seen corresponding path program 1 times [2021-12-22 14:31:24,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:24,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778173614] [2021-12-22 14:31:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:24,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:31:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:31:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:31:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:31:24,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:24,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778173614] [2021-12-22 14:31:24,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778173614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:24,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:24,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:31:24,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373757530] [2021-12-22 14:31:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:24,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:31:24,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:31:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:31:24,475 INFO L87 Difference]: Start difference. First operand 5158 states and 7331 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:31:27,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:30,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:35,056 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 [] [2021-12-22 14:31:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:37,463 INFO L93 Difference]: Finished difference Result 10800 states and 15472 transitions. [2021-12-22 14:31:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:31:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2021-12-22 14:31:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:37,488 INFO L225 Difference]: With dead ends: 10800 [2021-12-22 14:31:37,488 INFO L226 Difference]: Without dead ends: 5645 [2021-12-22 14:31:37,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:31:37,508 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 2569 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 973 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:37,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2717 Valid, 4626 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 1482 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2021-12-22 14:31:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-12-22 14:31:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5168. [2021-12-22 14:31:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 4039 states have (on average 1.3892052488239663) internal successors, (5611), 4107 states have internal predecessors, (5611), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2021-12-22 14:31:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7337 transitions. [2021-12-22 14:31:37,724 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7337 transitions. Word has length 48 [2021-12-22 14:31:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:37,725 INFO L470 AbstractCegarLoop]: Abstraction has 5168 states and 7337 transitions. [2021-12-22 14:31:37,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:31:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7337 transitions. [2021-12-22 14:31:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-22 14:31:37,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:37,730 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-22 14:31:37,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:31:37,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1890353553, now seen corresponding path program 1 times [2021-12-22 14:31:37,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:37,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990113573] [2021-12-22 14:31:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:37,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:31:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:31:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:31:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:31:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:31:37,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:37,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990113573] [2021-12-22 14:31:37,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990113573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:37,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:37,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:31:37,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159200725] [2021-12-22 14:31:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:37,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:31:37,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:31:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:31:37,938 INFO L87 Difference]: Start difference. First operand 5168 states and 7337 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:31:41,169 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 [] [2021-12-22 14:31:43,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:45,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:47,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:49,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:51,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:53,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:57,236 INFO L93 Difference]: Finished difference Result 11328 states and 16424 transitions. [2021-12-22 14:31:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:31:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2021-12-22 14:31:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:57,258 INFO L225 Difference]: With dead ends: 11328 [2021-12-22 14:31:57,258 INFO L226 Difference]: Without dead ends: 6163 [2021-12-22 14:31:57,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:31:57,274 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 2799 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 1136 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 6539 SdHoareTripleChecker+Invalid, 3859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:57,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2901 Valid, 6539 Invalid, 3859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 2720 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2021-12-22 14:31:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2021-12-22 14:31:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 4866. [2021-12-22 14:31:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 3821 states have (on average 1.3904736979848207) internal successors, (5313), 3889 states have internal predecessors, (5313), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-22 14:31:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 6875 transitions. [2021-12-22 14:31:57,420 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 6875 transitions. Word has length 65 [2021-12-22 14:31:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:57,421 INFO L470 AbstractCegarLoop]: Abstraction has 4866 states and 6875 transitions. [2021-12-22 14:31:57,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:31:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 6875 transitions. [2021-12-22 14:31:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-22 14:31:57,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:57,424 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-22 14:31:57,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:31:57,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 43225383, now seen corresponding path program 1 times [2021-12-22 14:31:57,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:57,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947330360] [2021-12-22 14:31:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:57,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:31:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:31:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:31:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:31:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:31:57,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947330360] [2021-12-22 14:31:57,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947330360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:57,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:57,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:31:57,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322891660] [2021-12-22 14:31:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:57,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:31:57,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:57,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:31:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:31:57,604 INFO L87 Difference]: Start difference. First operand 4866 states and 6875 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:32:00,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:02,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:05,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:32:07,842 INFO L93 Difference]: Finished difference Result 10616 states and 15420 transitions. [2021-12-22 14:32:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:32:07,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2021-12-22 14:32:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:32:07,862 INFO L225 Difference]: With dead ends: 10616 [2021-12-22 14:32:07,863 INFO L226 Difference]: Without dead ends: 5753 [2021-12-22 14:32:07,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:32:07,881 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 1521 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 951 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:32:07,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 3938 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 1498 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-12-22 14:32:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-12-22 14:32:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 4870. [2021-12-22 14:32:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4870 states, 3825 states have (on average 1.3900653594771242) internal successors, (5317), 3893 states have internal predecessors, (5317), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-22 14:32:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 6879 transitions. [2021-12-22 14:32:08,066 INFO L78 Accepts]: Start accepts. Automaton has 4870 states and 6879 transitions. Word has length 65 [2021-12-22 14:32:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:32:08,068 INFO L470 AbstractCegarLoop]: Abstraction has 4870 states and 6879 transitions. [2021-12-22 14:32:08,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:32:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4870 states and 6879 transitions. [2021-12-22 14:32:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-22 14:32:08,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:32:08,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:32:08,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:32:08,072 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:32:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:32:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1654589314, now seen corresponding path program 1 times [2021-12-22 14:32:08,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:32:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011378568] [2021-12-22 14:32:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:32:08,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:32:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:32:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:32:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:32:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:32:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:32:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:32:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:32:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:32:08,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:32:08,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011378568] [2021-12-22 14:32:08,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011378568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:32:08,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:32:08,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:32:08,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370950363] [2021-12-22 14:32:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:32:08,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:32:08,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:32:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:32:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:32:08,206 INFO L87 Difference]: Start difference. First operand 4870 states and 6879 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:32:11,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:13,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:15,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []