./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y --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 f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:38:13,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:38:13,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:38:13,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:38:13,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:38:13,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:38:14,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:38:14,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:38:14,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:38:14,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:38:14,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:38:14,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:38:14,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:38:14,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:38:14,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:38:14,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:38:14,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:38:14,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:38:14,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:38:14,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:38:14,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:38:14,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:38:14,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:38:14,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:38:14,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:38:14,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:38:14,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:38:14,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:38:14,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:38:14,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:38:14,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:38:14,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:38:14,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:38:14,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:38:14,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:38:14,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:38:14,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:38:14,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:38:14,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:38:14,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:38:14,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:38:14,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:38:14,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:38:14,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:38:14,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:38:14,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:38:14,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:38:14,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:38:14,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:38:14,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:38:14,121 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:38:14,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:38:14,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:38:14,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:38:14,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:38:14,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:38:14,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:38:14,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:38:14,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:38:14,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:38:14,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:38:14,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:38:14,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:38:14,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:38:14,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:38:14,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:38:14,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:38:14,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:38:14,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:38:14,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:38:14,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:38:14,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:38:14,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:38:14,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-13 17:38:14,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:38:14,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:38:14,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:38:14,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:38:14,578 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:38:14,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-13 17:38:14,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/data/8a87a58f5/4d72caaa59b24e7eb030fbf18d93ed8f/FLAG3161b1dc5 [2021-11-13 17:38:15,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:38:15,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-13 17:38:15,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/data/8a87a58f5/4d72caaa59b24e7eb030fbf18d93ed8f/FLAG3161b1dc5 [2021-11-13 17:38:16,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/data/8a87a58f5/4d72caaa59b24e7eb030fbf18d93ed8f [2021-11-13 17:38:16,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:38:16,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:38:16,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:38:16,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:38:16,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:38:16,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:38:16" (1/1) ... [2021-11-13 17:38:16,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a54f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:16, skipping insertion in model container [2021-11-13 17:38:16,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:38:16" (1/1) ... [2021-11-13 17:38:16,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:38:16,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:38:17,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-13 17:38:17,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:38:17,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:38:18,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-13 17:38:18,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:38:18,342 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:38:18,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18 WrapperNode [2021-11-13 17:38:18,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:38:18,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:38:18,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:38:18,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:38:18,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:38:18,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:38:18,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:38:18,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:38:18,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:38:18,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:38:18,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:38:18,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:38:18,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (1/1) ... [2021-11-13 17:38:18,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:38:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:38:19,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:38:19,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:38:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 17:38:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 17:38:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:38:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-13 17:38:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-13 17:38:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-13 17:38:19,080 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-13 17:38:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:38:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:38:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:38:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-13 17:38:19,081 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-13 17:38:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:38:19,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:38:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 17:38:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 17:38:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 17:38:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 17:38:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:38:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:38:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 17:38:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 17:38:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-13 17:38:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-13 17:38:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:38:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:38:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_init [2021-11-13 17:38:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_init [2021-11-13 17:38:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:38:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 17:38:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 17:38:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 17:38:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 17:38:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-11-13 17:38:19,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-11-13 17:38:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-13 17:38:19,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-13 17:38:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 17:38:19,087 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 17:38:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:38:19,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:38:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:38:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_exit [2021-11-13 17:38:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_exit [2021-11-13 17:38:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2021-11-13 17:38:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2021-11-13 17:38:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 17:38:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 17:38:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-13 17:38:19,090 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-13 17:38:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:38:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:38:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 17:38:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2021-11-13 17:38:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2021-11-13 17:38:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-13 17:38:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-13 17:38:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:38:19,094 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-13 17:38:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-13 17:38:19,095 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-13 17:38:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-13 17:38:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 17:38:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 17:38:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-13 17:38:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-13 17:38:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-13 17:38:19,097 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-13 17:38:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-13 17:38:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-13 17:38:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:38:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:38:19,098 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 17:38:19,098 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 17:38:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-13 17:38:19,100 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-13 17:38:19,100 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 17:38:19,101 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 17:38:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 17:38:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 17:38:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 17:38:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 17:38:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 17:38:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 17:38:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-13 17:38:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-13 17:38:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2021-11-13 17:38:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2021-11-13 17:38:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-11-13 17:38:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-11-13 17:38:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:38:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-13 17:38:19,105 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-13 17:38:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-13 17:38:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-13 17:38:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-13 17:38:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-13 17:38:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:38:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 17:38:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 17:38:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:38:19,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:38:20,221 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:38:20,233 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-11-13 17:38:20,233 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-11-13 17:38:20,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-11-13 17:38:20,651 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:38:20,671 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:38:20,684 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:38:25,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##275: assume !false; [2021-11-13 17:38:25,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##274: assume false; [2021-11-13 17:38:25,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-11-13 17:38:25,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-11-13 17:38:25,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-11-13 17:38:25,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-11-13 17:38:25,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:38:25,618 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-11-13 17:38:25,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:38:25 BoogieIcfgContainer [2021-11-13 17:38:25,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:38:25,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:38:25,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:38:25,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:38:25,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:38:16" (1/3) ... [2021-11-13 17:38:25,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3442efce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:38:25, skipping insertion in model container [2021-11-13 17:38:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:18" (2/3) ... [2021-11-13 17:38:25,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3442efce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:38:25, skipping insertion in model container [2021-11-13 17:38:25,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:38:25" (3/3) ... [2021-11-13 17:38:25,648 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-13 17:38:25,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:38:25,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:38:25,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:38:25,766 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 [2021-11-13 17:38:25,766 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:38:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 633 states, 448 states have (on average 1.4419642857142858) internal successors, (646), 471 states have internal predecessors, (646), 141 states have call successors, (141), 43 states have call predecessors, (141), 42 states have return successors, (139), 133 states have call predecessors, (139), 139 states have call successors, (139) [2021-11-13 17:38:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:38:25,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:25,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:25,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1746931262, now seen corresponding path program 1 times [2021-11-13 17:38:25,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:25,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441589072] [2021-11-13 17:38:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:25,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:38:26,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:26,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441589072] [2021-11-13 17:38:26,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441589072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:26,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:26,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:38:26,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760914354] [2021-11-13 17:38:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:26,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:38:26,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:26,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:38:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:26,624 INFO L87 Difference]: Start difference. First operand has 633 states, 448 states have (on average 1.4419642857142858) internal successors, (646), 471 states have internal predecessors, (646), 141 states have call successors, (141), 43 states have call predecessors, (141), 42 states have return successors, (139), 133 states have call predecessors, (139), 139 states have call successors, (139) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:38:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:26,968 INFO L93 Difference]: Finished difference Result 1859 states and 2764 transitions. [2021-11-13 17:38:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:38:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 17:38:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:27,018 INFO L225 Difference]: With dead ends: 1859 [2021-11-13 17:38:27,018 INFO L226 Difference]: Without dead ends: 1227 [2021-11-13 17:38:27,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:27,034 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 851 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.60ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:27,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1901 Invalid, 10 Unknown, 0 Unchecked, 42.24ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 16.60ms Time] [2021-11-13 17:38:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-13 17:38:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1223. [2021-11-13 17:38:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 868 states have (on average 1.3191244239631337) internal successors, (1145), 898 states have internal predecessors, (1145), 273 states have call successors, (273), 82 states have call predecessors, (273), 81 states have return successors, (271), 257 states have call predecessors, (271), 269 states have call successors, (271) [2021-11-13 17:38:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1689 transitions. [2021-11-13 17:38:27,346 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1689 transitions. Word has length 15 [2021-11-13 17:38:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:27,347 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1689 transitions. [2021-11-13 17:38:27,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:38:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1689 transitions. [2021-11-13 17:38:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 17:38:27,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:27,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:27,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:38:27,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1679402514, now seen corresponding path program 1 times [2021-11-13 17:38:27,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:27,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553514521] [2021-11-13 17:38:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:27,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:38:27,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:27,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553514521] [2021-11-13 17:38:27,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553514521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:27,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:27,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:38:27,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717925224] [2021-11-13 17:38:27,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:27,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:38:27,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:27,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:38:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:27,677 INFO L87 Difference]: Start difference. First operand 1223 states and 1689 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:38:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:27,869 INFO L93 Difference]: Finished difference Result 3644 states and 5042 transitions. [2021-11-13 17:38:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:38:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-13 17:38:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:27,907 INFO L225 Difference]: With dead ends: 3644 [2021-11-13 17:38:27,908 INFO L226 Difference]: Without dead ends: 2424 [2021-11-13 17:38:27,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:27,923 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 841 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.11ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:27,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1824 Invalid, 8 Unknown, 0 Unchecked, 23.11ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 15.78ms Time] [2021-11-13 17:38:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-13 17:38:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2417. [2021-11-13 17:38:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 1716 states have (on average 1.317016317016317) internal successors, (2260), 1771 states have internal predecessors, (2260), 540 states have call successors, (540), 161 states have call predecessors, (540), 160 states have return successors, (540), 512 states have call predecessors, (540), 536 states have call successors, (540) [2021-11-13 17:38:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3340 transitions. [2021-11-13 17:38:28,135 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3340 transitions. Word has length 16 [2021-11-13 17:38:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:28,135 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3340 transitions. [2021-11-13 17:38:28,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:38:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3340 transitions. [2021-11-13 17:38:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:38:28,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:28,152 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] [2021-11-13 17:38:28,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:38:28,153 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 627657167, now seen corresponding path program 1 times [2021-11-13 17:38:28,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:28,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812718935] [2021-11-13 17:38:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:28,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:38:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:38:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:38:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:38:28,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:28,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812718935] [2021-11-13 17:38:28,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812718935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:28,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:28,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:38:28,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019803183] [2021-11-13 17:38:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:28,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:38:28,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:38:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:28,476 INFO L87 Difference]: Start difference. First operand 2417 states and 3340 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:38:30,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:32,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:32,762 INFO L93 Difference]: Finished difference Result 6567 states and 9426 transitions. [2021-11-13 17:38:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:38:32,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-11-13 17:38:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:32,812 INFO L225 Difference]: With dead ends: 6567 [2021-11-13 17:38:32,829 INFO L226 Difference]: Without dead ends: 4161 [2021-11-13 17:38:32,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:38:32,855 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 1175 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 453 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3591.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.58ms SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3968.11ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:32,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 2831 Invalid, 1320 Unknown, 0 Unchecked, 31.58ms Time], IncrementalHoareTripleChecker [453 Valid, 866 Invalid, 1 Unknown, 0 Unchecked, 3968.11ms Time] [2021-11-13 17:38:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-11-13 17:38:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4001. [2021-11-13 17:38:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 2884 states have (on average 1.340499306518724) internal successors, (3866), 2955 states have internal predecessors, (3866), 956 states have call successors, (956), 161 states have call predecessors, (956), 160 states have return successors, (960), 920 states have call predecessors, (960), 952 states have call successors, (960) [2021-11-13 17:38:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5782 transitions. [2021-11-13 17:38:33,162 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5782 transitions. Word has length 54 [2021-11-13 17:38:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:33,163 INFO L470 AbstractCegarLoop]: Abstraction has 4001 states and 5782 transitions. [2021-11-13 17:38:33,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:38:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5782 transitions. [2021-11-13 17:38:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 17:38:33,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:33,171 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:33,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:38:33,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -136231158, now seen corresponding path program 1 times [2021-11-13 17:38:33,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:33,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203440980] [2021-11-13 17:38:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:33,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:38:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 17:38:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:38:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 17:38:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:38:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:38:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:38:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:38:33,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:33,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203440980] [2021-11-13 17:38:33,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203440980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:33,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:33,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:38:33,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966046196] [2021-11-13 17:38:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:33,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:38:33,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:38:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:33,529 INFO L87 Difference]: Start difference. First operand 4001 states and 5782 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:38:35,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:37,191 INFO L93 Difference]: Finished difference Result 10035 states and 14913 transitions. [2021-11-13 17:38:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:38:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2021-11-13 17:38:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:37,243 INFO L225 Difference]: With dead ends: 10035 [2021-11-13 17:38:37,243 INFO L226 Difference]: Without dead ends: 6043 [2021-11-13 17:38:37,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:37,260 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 700 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 472 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2956.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.41ms SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3276.22ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:37,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 1949 Invalid, 872 Unknown, 0 Unchecked, 20.41ms Time], IncrementalHoareTripleChecker [472 Valid, 399 Invalid, 1 Unknown, 0 Unchecked, 3276.22ms Time] [2021-11-13 17:38:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2021-11-13 17:38:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 5951. [2021-11-13 17:38:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5951 states, 4350 states have (on average 1.3779310344827587) internal successors, (5994), 4465 states have internal predecessors, (5994), 1440 states have call successors, (1440), 161 states have call predecessors, (1440), 160 states have return successors, (1446), 1384 states have call predecessors, (1446), 1436 states have call successors, (1446) [2021-11-13 17:38:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 8880 transitions. [2021-11-13 17:38:37,624 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 8880 transitions. Word has length 82 [2021-11-13 17:38:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:37,625 INFO L470 AbstractCegarLoop]: Abstraction has 5951 states and 8880 transitions. [2021-11-13 17:38:37,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:38:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 8880 transitions. [2021-11-13 17:38:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 17:38:37,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:37,632 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:37,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:38:37,632 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1744360749, now seen corresponding path program 1 times [2021-11-13 17:38:37,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:37,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871198839] [2021-11-13 17:38:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:37,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:38:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:38:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:38:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 17:38:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:38:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:38:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:38:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:38:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:38:37,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:37,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871198839] [2021-11-13 17:38:37,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871198839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:37,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:37,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:38:37,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175538399] [2021-11-13 17:38:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:37,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:38:37,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:38:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:37,878 INFO L87 Difference]: Start difference. First operand 5951 states and 8880 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:38:39,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:42,674 INFO L93 Difference]: Finished difference Result 16169 states and 24326 transitions. [2021-11-13 17:38:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:38:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2021-11-13 17:38:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:42,770 INFO L225 Difference]: With dead ends: 16169 [2021-11-13 17:38:42,771 INFO L226 Difference]: Without dead ends: 10229 [2021-11-13 17:38:42,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:38:42,798 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 1001 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3880.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.96ms SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4297.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:42,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2655 Invalid, 1335 Unknown, 0 Unchecked, 28.96ms Time], IncrementalHoareTripleChecker [532 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 4297.74ms Time] [2021-11-13 17:38:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10229 states. [2021-11-13 17:38:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10229 to 9915. [2021-11-13 17:38:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 7278 states have (on average 1.391453696070349) internal successors, (10127), 7493 states have internal predecessors, (10127), 2360 states have call successors, (2360), 277 states have call predecessors, (2360), 276 states have return successors, (2394), 2220 states have call predecessors, (2394), 2356 states have call successors, (2394) [2021-11-13 17:38:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 14881 transitions. [2021-11-13 17:38:43,416 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 14881 transitions. Word has length 102 [2021-11-13 17:38:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:43,417 INFO L470 AbstractCegarLoop]: Abstraction has 9915 states and 14881 transitions. [2021-11-13 17:38:43,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:38:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 14881 transitions. [2021-11-13 17:38:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 17:38:43,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:43,423 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:43,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:38:43,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1225750353, now seen corresponding path program 1 times [2021-11-13 17:38:43,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:43,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918234695] [2021-11-13 17:38:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:43,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:38:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:38:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:38:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 17:38:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:38:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:38:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:38:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:38:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:38:43,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:43,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918234695] [2021-11-13 17:38:43,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918234695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:43,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:43,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:38:43,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595026677] [2021-11-13 17:38:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:43,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:38:43,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:38:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:43,728 INFO L87 Difference]: Start difference. First operand 9915 states and 14881 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 17:38:44,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:47,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:48,820 INFO L93 Difference]: Finished difference Result 20077 states and 30255 transitions. [2021-11-13 17:38:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:38:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2021-11-13 17:38:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:48,869 INFO L225 Difference]: With dead ends: 20077 [2021-11-13 17:38:48,870 INFO L226 Difference]: Without dead ends: 10135 [2021-11-13 17:38:48,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:38:48,902 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 179 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4213.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.29ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4624.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:48,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 3101 Invalid, 778 Unknown, 0 Unchecked, 21.29ms Time], IncrementalHoareTripleChecker [153 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 4624.20ms Time] [2021-11-13 17:38:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2021-11-13 17:38:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 9877. [2021-11-13 17:38:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9877 states, 7264 states have (on average 1.3911068281938326) internal successors, (10105), 7485 states have internal predecessors, (10105), 2333 states have call successors, (2333), 280 states have call predecessors, (2333), 279 states have return successors, (2367), 2187 states have call predecessors, (2367), 2329 states have call successors, (2367) [2021-11-13 17:38:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 14805 transitions. [2021-11-13 17:38:49,467 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 14805 transitions. Word has length 102 [2021-11-13 17:38:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:49,468 INFO L470 AbstractCegarLoop]: Abstraction has 9877 states and 14805 transitions. [2021-11-13 17:38:49,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 17:38:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 14805 transitions. [2021-11-13 17:38:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 17:38:49,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:49,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:49,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:38:49,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 973286060, now seen corresponding path program 1 times [2021-11-13 17:38:49,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:49,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033095277] [2021-11-13 17:38:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:49,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:38:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 17:38:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 17:38:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:38:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:38:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 17:38:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:38:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 17:38:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 17:38:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:38:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 17:38:49,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:49,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033095277] [2021-11-13 17:38:49,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033095277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:49,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:49,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:38:49,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197543075] [2021-11-13 17:38:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:49,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:38:49,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:38:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:38:49,837 INFO L87 Difference]: Start difference. First operand 9877 states and 14805 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:38:51,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:52,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:54,179 INFO L93 Difference]: Finished difference Result 18265 states and 27274 transitions. [2021-11-13 17:38:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:38:54,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2021-11-13 17:38:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:54,228 INFO L225 Difference]: With dead ends: 18265 [2021-11-13 17:38:54,228 INFO L226 Difference]: Without dead ends: 8372 [2021-11-13 17:38:54,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:38:54,263 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 423 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3578.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.13ms SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3948.05ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:54,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 3263 Invalid, 951 Unknown, 0 Unchecked, 17.13ms Time], IncrementalHoareTripleChecker [310 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 3948.05ms Time] [2021-11-13 17:38:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2021-11-13 17:38:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 8094. [2021-11-13 17:38:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8094 states, 5943 states have (on average 1.375399629816591) internal successors, (8174), 6109 states have internal predecessors, (8174), 1872 states have call successors, (1872), 279 states have call predecessors, (1872), 278 states have return successors, (1891), 1761 states have call predecessors, (1891), 1867 states have call successors, (1891) [2021-11-13 17:38:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 11937 transitions. [2021-11-13 17:38:54,738 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 11937 transitions. Word has length 124 [2021-11-13 17:38:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:54,741 INFO L470 AbstractCegarLoop]: Abstraction has 8094 states and 11937 transitions. [2021-11-13 17:38:54,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:38:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 11937 transitions. [2021-11-13 17:38:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 17:38:54,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:54,746 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:54,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:38:54,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1605305614, now seen corresponding path program 1 times [2021-11-13 17:38:54,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:54,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719115638] [2021-11-13 17:38:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:54,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:38:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 17:38:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:38:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:38:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:38:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:38:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 17:38:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 17:38:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:38:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:38:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:38:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:38:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 17:38:55,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719115638] [2021-11-13 17:38:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719115638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:38:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559042775] [2021-11-13 17:38:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:55,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:38:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:38:55,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:38:55,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:38:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:56,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-13 17:38:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:57,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:39:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:10,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:39:10,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:39:10,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:10,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:39:10,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:39:30,206 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-13 17:39:30,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-13 17:39:30,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:39:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:30,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:39:30,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:30,666 INFO L354 Elim1Store]: treesize reduction 590, result has 21.0 percent of original size [2021-11-13 17:39:30,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 298 [2021-11-13 17:39:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:31,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 38 [2021-11-13 17:39:32,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,121 INFO L354 Elim1Store]: treesize reduction 49, result has 22.2 percent of original size [2021-11-13 17:39:32,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 61 [2021-11-13 17:39:32,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:32,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 38 [2021-11-13 17:39:33,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 102 [2021-11-13 17:39:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 102 [2021-11-13 17:39:33,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,447 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-13 17:39:33,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 32 [2021-11-13 17:39:33,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-13 17:39:33,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-11-13 17:39:33,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:33,589 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-11-13 17:39:33,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 41 [2021-11-13 17:39:43,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:39:43,843 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-13 17:39:43,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2021-11-13 17:39:47,115 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-13 17:39:47,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-11-13 17:39:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 4 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:39:47,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:39:47,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559042775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:39:47,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:39:47,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-11-13 17:39:47,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068712674] [2021-11-13 17:39:47,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:39:47,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-13 17:39:47,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:39:47,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-13 17:39:47,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=816, Unknown=25, NotChecked=0, Total=930 [2021-11-13 17:39:47,380 INFO L87 Difference]: Start difference. First operand 8094 states and 11937 transitions. Second operand has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-13 17:39:49,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:50,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:52,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:53,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:55,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:56,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:59,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:01,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:03,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:04,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:41:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:41:02,482 INFO L93 Difference]: Finished difference Result 16667 states and 24712 transitions. [2021-11-13 17:41:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-13 17:41:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) Word has length 125 [2021-11-13 17:41:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:41:02,529 INFO L225 Difference]: With dead ends: 16667 [2021-11-13 17:41:02,530 INFO L226 Difference]: Without dead ends: 8572 [2021-11-13 17:41:02,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 86.6s TimeCoverageRelationStatistics Valid=336, Invalid=2363, Unknown=57, NotChecked=0, Total=2756 [2021-11-13 17:41:02,624 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 1534 mSDsluCounter, 11326 mSDsCounter, 0 mSdLazyCounter, 9018 mSolverCounterSat, 1168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31215.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 12163 SdHoareTripleChecker+Invalid, 12028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.98ms SdHoareTripleChecker+Time, 1168 IncrementalHoareTripleChecker+Valid, 9018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1842 IncrementalHoareTripleChecker+Unchecked, 34271.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:41:02,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 12163 Invalid, 12028 Unknown, 0 Unchecked, 122.98ms Time], IncrementalHoareTripleChecker [1168 Valid, 9018 Invalid, 0 Unknown, 1842 Unchecked, 34271.14ms Time] [2021-11-13 17:41:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2021-11-13 17:41:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8304. [2021-11-13 17:41:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8304 states, 6097 states have (on average 1.368049860587174) internal successors, (8341), 6276 states have internal predecessors, (8341), 1888 states have call successors, (1888), 283 states have call predecessors, (1888), 318 states have return successors, (2111), 1800 states have call predecessors, (2111), 1883 states have call successors, (2111) [2021-11-13 17:41:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8304 states to 8304 states and 12340 transitions. [2021-11-13 17:41:03,105 INFO L78 Accepts]: Start accepts. Automaton has 8304 states and 12340 transitions. Word has length 125 [2021-11-13 17:41:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:41:03,106 INFO L470 AbstractCegarLoop]: Abstraction has 8304 states and 12340 transitions. [2021-11-13 17:41:03,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (30), 12 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-13 17:41:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8304 states and 12340 transitions. [2021-11-13 17:41:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 17:41:03,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:41:03,112 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:41:03,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:41:03,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:41:03,334 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:41:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:41:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -666773999, now seen corresponding path program 1 times [2021-11-13 17:41:03,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:41:03,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091644408] [2021-11-13 17:41:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:03,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:41:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:41:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:41:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:03,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 17:41:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:41:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:41:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:41:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:41:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:41:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 17:41:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 17:41:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:41:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:41:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:41:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:41:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 17:41:04,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:41:04,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091644408] [2021-11-13 17:41:04,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091644408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:41:04,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384350441] [2021-11-13 17:41:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:04,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:41:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:41:04,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:41:04,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3e4aa1-b32e-4024-b519-36d1f22bb1e2/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:41:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:05,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-13 17:41:05,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:41:06,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:41:07,528 WARN L860 $PredicateComparison]: unable to prove that (exists ((atomic_set_~i Int) (atomic_set_~v.offset Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_atomic_set_#in~v.base| (store (select |c_old(#memory_int)| |c_atomic_set_#in~v.base|) atomic_set_~v.offset atomic_set_~i)))) is different from true [2021-11-13 17:41:07,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:07,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:41:07,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:41:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:07,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:41:07,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:41:07,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:07,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:41:07,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-13 17:41:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:07,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 17:41:07,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:08,170 INFO L354 Elim1Store]: treesize reduction 590, result has 21.0 percent of original size [2021-11-13 17:41:08,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 386 treesize of output 414 [2021-11-13 17:41:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,654 INFO L354 Elim1Store]: treesize reduction 34, result has 46.0 percent of original size [2021-11-13 17:41:12,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 100 [2021-11-13 17:41:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:12,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,003 INFO L354 Elim1Store]: treesize reduction 49, result has 22.2 percent of original size [2021-11-13 17:41:13,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 107 treesize of output 83 [2021-11-13 17:41:13,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:41:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 103 [2021-11-13 17:41:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-11-13 17:41:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:41:13,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:13,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 48 [2021-11-13 17:41:25,559 WARN L227 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:41:25,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2021-11-13 17:41:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:41:25,819 INFO L354 Elim1Store]: treesize reduction 244, result has 26.7 percent of original size [2021-11-13 17:41:25,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 122 [2021-11-13 17:41:25,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104