./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:31:42,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:31:42,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:31:42,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:31:42,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:31:42,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:31:42,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:31:42,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:31:42,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:31:42,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:31:42,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:31:42,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:31:42,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:31:42,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:31:42,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:31:42,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:31:42,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:31:42,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:31:42,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:31:42,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:31:42,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:31:42,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:31:42,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:31:42,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:31:42,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:31:42,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:31:42,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:31:42,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:31:42,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:31:42,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:31:42,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:31:42,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:31:42,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:31:42,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:31:42,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:31:42,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:31:42,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:31:42,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:31:42,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:31:42,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:31:42,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:31:42,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:31:42,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:31:42,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:31:42,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:31:42,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:31:42,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:31:42,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:31:42,224 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:31:42,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:31:42,225 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:31:42,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:31:42,226 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:31:42,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:31:42,226 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:31:42,227 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:31:42,227 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:31:42,227 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:31:42,227 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:31:42,228 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:31:42,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:31:42,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:31:42,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:31:42,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:31:42,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:31:42,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:31:42,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:31:42,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:31:42,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:31:42,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:31:42,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:31:42,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:31:42,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:31:42,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:31:42,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:31:42,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:31:42,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:31:42,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:31:42,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:31:42,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:31:42,233 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_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2022-11-03 02:31:42,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:31:42,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:31:42,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:31:42,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:31:42,525 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:31:42,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2022-11-03 02:31:42,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/data/2571f8c95/3170a0f513314adb9c8d1152e1cc6bcd/FLAGf54f60ac4 [2022-11-03 02:31:43,378 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:31:43,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2022-11-03 02:31:43,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/data/2571f8c95/3170a0f513314adb9c8d1152e1cc6bcd/FLAGf54f60ac4 [2022-11-03 02:31:43,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/data/2571f8c95/3170a0f513314adb9c8d1152e1cc6bcd [2022-11-03 02:31:43,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:31:43,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:31:43,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:31:43,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:31:43,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:31:43,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:31:43" (1/1) ... [2022-11-03 02:31:43,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d67b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:43, skipping insertion in model container [2022-11-03 02:31:43,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:31:43" (1/1) ... [2022-11-03 02:31:43,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:31:44,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:31:44,605 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2022-11-03 02:31:45,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2022-11-03 02:31:46,099 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 02:31:46,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:31:46,162 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:31:46,284 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2022-11-03 02:31:46,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2022-11-03 02:31:46,738 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 02:31:46,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:31:46,861 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:31:46,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46 WrapperNode [2022-11-03 02:31:46,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:31:46,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:31:46,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:31:46,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:31:46,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:46,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,168 INFO L138 Inliner]: procedures = 242, calls = 2936, calls flagged for inlining = 95, calls inlined = 71, statements flattened = 3985 [2022-11-03 02:31:47,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:31:47,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:31:47,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:31:47,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:31:47,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:31:47,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:31:47,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:31:47,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:31:47,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (1/1) ... [2022-11-03 02:31:47,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:31:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:31:47,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:31:47,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:31:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:31:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:31:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure wxh_to_mode [2022-11-03 02:31:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure wxh_to_mode [2022-11-03 02:31:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure PDEBUG_MODE [2022-11-03 02:31:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure PDEBUG_MODE [2022-11-03 02:31:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:31:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:31:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:31:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:31:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-03 02:31:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-03 02:31:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 02:31:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 02:31:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure frame_free [2022-11-03 02:31:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_free [2022-11-03 02:31:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure alt_xfer [2022-11-03 02:31:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_xfer [2022-11-03 02:31:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2022-11-03 02:31:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2022-11-03 02:31:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:31:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:31:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mmap [2022-11-03 02:31:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mmap [2022-11-03 02:31:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-03 02:31:47,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-03 02:31:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:31:47,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:31:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 02:31:47,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 02:31:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2022-11-03 02:31:47,651 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2022-11-03 02:31:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2022-11-03 02:31:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2022-11-03 02:31:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure dev_poll [2022-11-03 02:31:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_poll [2022-11-03 02:31:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-03 02:31:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-03 02:31:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-03 02:31:47,653 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-03 02:31:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure frame_ready_nolock [2022-11-03 02:31:47,653 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_ready_nolock [2022-11-03 02:31:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:31:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:31:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:31:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:31:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure frame_ready [2022-11-03 02:31:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_ready [2022-11-03 02:31:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 02:31:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 02:31:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:31:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:31:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:31:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:31:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:31:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:31:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_set_alt0 [2022-11-03 02:31:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_set_alt0 [2022-11-03 02:31:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2022-11-03 02:31:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2022-11-03 02:31:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-03 02:31:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-03 02:31:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-03 02:31:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-03 02:31:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-03 02:31:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-03 02:31:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:31:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 02:31:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 02:31:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 02:31:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 02:31:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:31:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2022-11-03 02:31:47,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2022-11-03 02:31:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:31:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-03 02:31:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-03 02:31:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2022-11-03 02:31:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2022-11-03 02:31:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:31:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:31:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 02:31:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 02:31:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-03 02:31:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-03 02:31:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2022-11-03 02:31:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2022-11-03 02:31:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2022-11-03 02:31:47,667 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2022-11-03 02:31:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:31:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:31:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2022-11-03 02:31:47,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2022-11-03 02:31:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure read_alloc [2022-11-03 02:31:47,668 INFO L138 BoogieDeclarations]: Found implementation of procedure read_alloc [2022-11-03 02:31:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2022-11-03 02:31:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2022-11-03 02:31:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:31:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:31:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:31:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:31:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:31:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2022-11-03 02:31:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2022-11-03 02:31:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-03 02:31:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-03 02:31:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2022-11-03 02:31:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2022-11-03 02:31:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timeval [2022-11-03 02:31:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timeval [2022-11-03 02:31:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-03 02:31:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-03 02:31:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2022-11-03 02:31:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release_empty [2022-11-03 02:31:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:31:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-11-03 02:31:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-11-03 02:31:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-03 02:31:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-03 02:31:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2022-11-03 02:31:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2022-11-03 02:31:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2022-11-03 02:31:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2022-11-03 02:31:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_destroy_urb [2022-11-03 02:31:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_destroy_urb [2022-11-03 02:31:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:31:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:31:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:31:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:31:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:31:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:31:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:31:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-03 02:31:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-03 02:31:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:31:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:31:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:31:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:31:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:31:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:31:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:31:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-03 02:31:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-03 02:31:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:31:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_urbs [2022-11-03 02:31:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_urbs [2022-11-03 02:31:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:31:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-03 02:31:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-03 02:31:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:31:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:31:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:31:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:31:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure try_fmt_vid_cap [2022-11-03 02:31:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure try_fmt_vid_cap [2022-11-03 02:31:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:31:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:31:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:31:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:31:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 02:31:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 02:31:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure dev_open [2022-11-03 02:31:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_open [2022-11-03 02:31:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_vm_close [2022-11-03 02:31:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_vm_close [2022-11-03 02:31:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:31:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:31:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-03 02:31:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-03 02:31:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:31:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:31:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-03 02:31:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-03 02:31:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 02:31:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 02:31:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:31:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:31:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 02:31:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_vm_open [2022-11-03 02:31:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_vm_open [2022-11-03 02:31:47,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:31:47,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:31:48,483 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:31:48,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:31:48,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:31:50,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-03 02:31:52,771 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:31:53,951 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:31:53,951 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:31:53,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:31:53 BoogieIcfgContainer [2022-11-03 02:31:53,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:31:53,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:31:53,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:31:53,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:31:53,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:31:43" (1/3) ... [2022-11-03 02:31:53,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddb91d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:31:53, skipping insertion in model container [2022-11-03 02:31:53,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:31:46" (2/3) ... [2022-11-03 02:31:53,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddb91d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:31:53, skipping insertion in model container [2022-11-03 02:31:53,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:31:53" (3/3) ... [2022-11-03 02:31:53,967 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2022-11-03 02:31:53,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:31:53,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:31:54,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:31:54,077 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45c66d26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:31:54,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:31:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 733 states have (on average 1.3997271487039564) internal successors, (1026), 761 states have internal predecessors, (1026), 287 states have call successors, (287), 82 states have call predecessors, (287), 80 states have return successors, (280), 274 states have call predecessors, (280), 280 states have call successors, (280) [2022-11-03 02:31:54,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-03 02:31:54,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:54,108 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:31:54,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1442984601, now seen corresponding path program 1 times [2022-11-03 02:31:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409849827] [2022-11-03 02:31:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:31:55,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409849827] [2022-11-03 02:31:55,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409849827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:55,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:55,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:31:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125955500] [2022-11-03 02:31:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:31:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:31:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:31:55,341 INFO L87 Difference]: Start difference. First operand has 1102 states, 733 states have (on average 1.3997271487039564) internal successors, (1026), 761 states have internal predecessors, (1026), 287 states have call successors, (287), 82 states have call predecessors, (287), 80 states have return successors, (280), 274 states have call predecessors, (280), 280 states have call successors, (280) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:31:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:58,210 INFO L93 Difference]: Finished difference Result 3096 states and 4468 transitions. [2022-11-03 02:31:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:31:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2022-11-03 02:31:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:58,252 INFO L225 Difference]: With dead ends: 3096 [2022-11-03 02:31:58,252 INFO L226 Difference]: Without dead ends: 2059 [2022-11-03 02:31:58,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:31:58,270 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1400 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:58,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 3022 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:31:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-11-03 02:31:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2059. [2022-11-03 02:31:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1397 states have (on average 1.4001431639226916) internal successors, (1956), 1431 states have internal predecessors, (1956), 504 states have call successors, (504), 158 states have call predecessors, (504), 157 states have return successors, (499), 487 states have call predecessors, (499), 499 states have call successors, (499) [2022-11-03 02:31:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2959 transitions. [2022-11-03 02:31:58,536 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2959 transitions. Word has length 262 [2022-11-03 02:31:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:58,541 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 2959 transitions. [2022-11-03 02:31:58,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:31:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2959 transitions. [2022-11-03 02:31:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:31:58,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:58,558 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:31:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:31:58,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1261973833, now seen corresponding path program 1 times [2022-11-03 02:31:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237984050] [2022-11-03 02:31:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:31:59,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:59,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237984050] [2022-11-03 02:31:59,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237984050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:59,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:59,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:31:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400197270] [2022-11-03 02:31:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:31:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:31:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:31:59,900 INFO L87 Difference]: Start difference. First operand 2059 states and 2959 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:02,668 INFO L93 Difference]: Finished difference Result 3951 states and 5784 transitions. [2022-11-03 02:32:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2022-11-03 02:32:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:02,700 INFO L225 Difference]: With dead ends: 3951 [2022-11-03 02:32:02,700 INFO L226 Difference]: Without dead ends: 3948 [2022-11-03 02:32:02,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:02,705 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1412 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:02,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 2918 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:32:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-11-03 02:32:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3936. [2022-11-03 02:32:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 2690 states have (on average 1.4089219330855018) internal successors, (3790), 2758 states have internal predecessors, (3790), 941 states have call successors, (941), 309 states have call predecessors, (941), 304 states have return successors, (1036), 904 states have call predecessors, (1036), 936 states have call successors, (1036) [2022-11-03 02:32:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5767 transitions. [2022-11-03 02:32:02,936 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5767 transitions. Word has length 265 [2022-11-03 02:32:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:02,938 INFO L495 AbstractCegarLoop]: Abstraction has 3936 states and 5767 transitions. [2022-11-03 02:32:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5767 transitions. [2022-11-03 02:32:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 02:32:02,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:02,944 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:02,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:32:02,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash 465769862, now seen corresponding path program 1 times [2022-11-03 02:32:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:02,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791257413] [2022-11-03 02:32:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:02,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:32:03,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:03,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791257413] [2022-11-03 02:32:03,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791257413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:03,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:03,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605470952] [2022-11-03 02:32:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:03,987 INFO L87 Difference]: Start difference. First operand 3936 states and 5767 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:06,201 INFO L93 Difference]: Finished difference Result 3938 states and 5768 transitions. [2022-11-03 02:32:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 266 [2022-11-03 02:32:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:06,226 INFO L225 Difference]: With dead ends: 3938 [2022-11-03 02:32:06,226 INFO L226 Difference]: Without dead ends: 3935 [2022-11-03 02:32:06,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:06,233 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 1470 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:06,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1383 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:32:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-11-03 02:32:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3935. [2022-11-03 02:32:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 2690 states have (on average 1.408550185873606) internal successors, (3789), 2757 states have internal predecessors, (3789), 940 states have call successors, (940), 309 states have call predecessors, (940), 304 states have return successors, (1036), 904 states have call predecessors, (1036), 936 states have call successors, (1036) [2022-11-03 02:32:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 5765 transitions. [2022-11-03 02:32:06,488 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 5765 transitions. Word has length 266 [2022-11-03 02:32:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:06,488 INFO L495 AbstractCegarLoop]: Abstraction has 3935 states and 5765 transitions. [2022-11-03 02:32:06,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 5765 transitions. [2022-11-03 02:32:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-03 02:32:06,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:06,494 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:06,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:32:06,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1553255404, now seen corresponding path program 1 times [2022-11-03 02:32:06,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:06,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030880472] [2022-11-03 02:32:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:06,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:32:06,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030880472] [2022-11-03 02:32:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030880472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:06,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:06,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:06,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373961700] [2022-11-03 02:32:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:06,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:06,906 INFO L87 Difference]: Start difference. First operand 3935 states and 5765 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:09,439 INFO L93 Difference]: Finished difference Result 3937 states and 5766 transitions. [2022-11-03 02:32:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2022-11-03 02:32:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:09,470 INFO L225 Difference]: With dead ends: 3937 [2022-11-03 02:32:09,471 INFO L226 Difference]: Without dead ends: 3934 [2022-11-03 02:32:09,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:09,479 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 1467 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:09,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1381 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:32:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-11-03 02:32:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3934. [2022-11-03 02:32:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 2690 states have (on average 1.40817843866171) internal successors, (3788), 2756 states have internal predecessors, (3788), 939 states have call successors, (939), 309 states have call predecessors, (939), 304 states have return successors, (1036), 904 states have call predecessors, (1036), 936 states have call successors, (1036) [2022-11-03 02:32:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5763 transitions. [2022-11-03 02:32:09,892 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5763 transitions. Word has length 267 [2022-11-03 02:32:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:09,896 INFO L495 AbstractCegarLoop]: Abstraction has 3934 states and 5763 transitions. [2022-11-03 02:32:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5763 transitions. [2022-11-03 02:32:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 02:32:09,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:09,903 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:09,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:32:09,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:09,904 INFO L85 PathProgramCache]: Analyzing trace with hash 905573705, now seen corresponding path program 1 times [2022-11-03 02:32:09,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:09,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89414641] [2022-11-03 02:32:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:09,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:32:10,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89414641] [2022-11-03 02:32:10,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89414641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:10,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:10,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522802552] [2022-11-03 02:32:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:10,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:10,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:10,334 INFO L87 Difference]: Start difference. First operand 3934 states and 5763 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:11,859 INFO L93 Difference]: Finished difference Result 3936 states and 5764 transitions. [2022-11-03 02:32:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:11,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 268 [2022-11-03 02:32:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:11,885 INFO L225 Difference]: With dead ends: 3936 [2022-11-03 02:32:11,885 INFO L226 Difference]: Without dead ends: 3933 [2022-11-03 02:32:11,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:11,891 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1464 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:11,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1379 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:32:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2022-11-03 02:32:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3933. [2022-11-03 02:32:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3933 states, 2690 states have (on average 1.4078066914498142) internal successors, (3787), 2755 states have internal predecessors, (3787), 938 states have call successors, (938), 309 states have call predecessors, (938), 304 states have return successors, (1036), 904 states have call predecessors, (1036), 936 states have call successors, (1036) [2022-11-03 02:32:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3933 states to 3933 states and 5761 transitions. [2022-11-03 02:32:12,227 INFO L78 Accepts]: Start accepts. Automaton has 3933 states and 5761 transitions. Word has length 268 [2022-11-03 02:32:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:12,228 INFO L495 AbstractCegarLoop]: Abstraction has 3933 states and 5761 transitions. [2022-11-03 02:32:12,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3933 states and 5761 transitions. [2022-11-03 02:32:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-03 02:32:12,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:12,234 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:12,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:32:12,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1992684913, now seen corresponding path program 1 times [2022-11-03 02:32:12,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:12,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560979842] [2022-11-03 02:32:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:12,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3123 trivial. 0 not checked. [2022-11-03 02:32:12,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560979842] [2022-11-03 02:32:12,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560979842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:12,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:12,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689386766] [2022-11-03 02:32:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:12,600 INFO L87 Difference]: Start difference. First operand 3933 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:14,003 INFO L93 Difference]: Finished difference Result 3935 states and 5762 transitions. [2022-11-03 02:32:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:14,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 269 [2022-11-03 02:32:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:14,027 INFO L225 Difference]: With dead ends: 3935 [2022-11-03 02:32:14,027 INFO L226 Difference]: Without dead ends: 3926 [2022-11-03 02:32:14,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:14,033 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1461 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:14,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 1378 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:32:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2022-11-03 02:32:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3926. [2022-11-03 02:32:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 2684 states have (on average 1.4072280178837555) internal successors, (3777), 2748 states have internal predecessors, (3777), 937 states have call successors, (937), 309 states have call predecessors, (937), 304 states have return successors, (1036), 904 states have call predecessors, (1036), 936 states have call successors, (1036) [2022-11-03 02:32:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 5750 transitions. [2022-11-03 02:32:14,347 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 5750 transitions. Word has length 269 [2022-11-03 02:32:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:14,348 INFO L495 AbstractCegarLoop]: Abstraction has 3926 states and 5750 transitions. [2022-11-03 02:32:14,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2022-11-03 02:32:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 5750 transitions. [2022-11-03 02:32:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-03 02:32:14,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:14,366 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:32:14,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1849433951, now seen corresponding path program 1 times [2022-11-03 02:32:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704297277] [2022-11-03 02:32:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3147 trivial. 0 not checked. [2022-11-03 02:32:14,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:14,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704297277] [2022-11-03 02:32:14,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704297277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:14,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:14,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611560763] [2022-11-03 02:32:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:14,778 INFO L87 Difference]: Start difference. First operand 3926 states and 5750 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 02:32:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:17,410 INFO L93 Difference]: Finished difference Result 10704 states and 15570 transitions. [2022-11-03 02:32:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 382 [2022-11-03 02:32:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:17,446 INFO L225 Difference]: With dead ends: 10704 [2022-11-03 02:32:17,446 INFO L226 Difference]: Without dead ends: 6863 [2022-11-03 02:32:17,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:17,464 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1186 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:17,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 2733 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:32:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6863 states. [2022-11-03 02:32:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6863 to 6858. [2022-11-03 02:32:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6858 states, 4656 states have (on average 1.3994845360824741) internal successors, (6516), 4784 states have internal predecessors, (6516), 1622 states have call successors, (1622), 588 states have call predecessors, (1622), 579 states have return successors, (1801), 1557 states have call predecessors, (1801), 1621 states have call successors, (1801) [2022-11-03 02:32:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6858 states to 6858 states and 9939 transitions. [2022-11-03 02:32:17,952 INFO L78 Accepts]: Start accepts. Automaton has 6858 states and 9939 transitions. Word has length 382 [2022-11-03 02:32:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:17,954 INFO L495 AbstractCegarLoop]: Abstraction has 6858 states and 9939 transitions. [2022-11-03 02:32:17,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 02:32:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6858 states and 9939 transitions. [2022-11-03 02:32:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-03 02:32:17,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:17,982 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:32:17,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1301206178, now seen corresponding path program 1 times [2022-11-03 02:32:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476868926] [2022-11-03 02:32:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-11-03 02:32:18,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:18,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476868926] [2022-11-03 02:32:18,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476868926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:18,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:18,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997694916] [2022-11-03 02:32:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:18,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:18,334 INFO L87 Difference]: Start difference. First operand 6858 states and 9939 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 02:32:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:21,687 INFO L93 Difference]: Finished difference Result 17373 states and 25194 transitions. [2022-11-03 02:32:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:21,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 392 [2022-11-03 02:32:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:21,745 INFO L225 Difference]: With dead ends: 17373 [2022-11-03 02:32:21,746 INFO L226 Difference]: Without dead ends: 10606 [2022-11-03 02:32:21,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:21,779 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 1442 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:21,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3352 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:32:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2022-11-03 02:32:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10599. [2022-11-03 02:32:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10599 states, 7257 states have (on average 1.4047126911947085) internal successors, (10194), 7451 states have internal predecessors, (10194), 2456 states have call successors, (2456), 898 states have call predecessors, (2456), 885 states have return successors, (2725), 2357 states have call predecessors, (2725), 2455 states have call successors, (2725) [2022-11-03 02:32:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10599 states to 10599 states and 15375 transitions. [2022-11-03 02:32:22,575 INFO L78 Accepts]: Start accepts. Automaton has 10599 states and 15375 transitions. Word has length 392 [2022-11-03 02:32:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:22,576 INFO L495 AbstractCegarLoop]: Abstraction has 10599 states and 15375 transitions. [2022-11-03 02:32:22,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 02:32:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10599 states and 15375 transitions. [2022-11-03 02:32:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-03 02:32:22,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:22,616 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:22,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:32:22,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:22,617 INFO L85 PathProgramCache]: Analyzing trace with hash -936048895, now seen corresponding path program 1 times [2022-11-03 02:32:22,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:22,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211389651] [2022-11-03 02:32:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:22,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4553 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4543 trivial. 0 not checked. [2022-11-03 02:32:23,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211389651] [2022-11-03 02:32:23,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211389651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:23,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:23,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146678793] [2022-11-03 02:32:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:23,445 INFO L87 Difference]: Start difference. First operand 10599 states and 15375 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:32:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:26,337 INFO L93 Difference]: Finished difference Result 21222 states and 31674 transitions. [2022-11-03 02:32:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 437 [2022-11-03 02:32:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:26,396 INFO L225 Difference]: With dead ends: 21222 [2022-11-03 02:32:26,397 INFO L226 Difference]: Without dead ends: 10719 [2022-11-03 02:32:26,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:26,447 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 6 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:26,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2746 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:32:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10719 states. [2022-11-03 02:32:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10719 to 10611. [2022-11-03 02:32:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10611 states, 7269 states have (on average 1.4040445728435824) internal successors, (10206), 7463 states have internal predecessors, (10206), 2456 states have call successors, (2456), 898 states have call predecessors, (2456), 885 states have return successors, (2725), 2357 states have call predecessors, (2725), 2455 states have call successors, (2725) [2022-11-03 02:32:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10611 states to 10611 states and 15387 transitions. [2022-11-03 02:32:27,298 INFO L78 Accepts]: Start accepts. Automaton has 10611 states and 15387 transitions. Word has length 437 [2022-11-03 02:32:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:27,299 INFO L495 AbstractCegarLoop]: Abstraction has 10611 states and 15387 transitions. [2022-11-03 02:32:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:32:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 10611 states and 15387 transitions. [2022-11-03 02:32:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 02:32:27,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:27,337 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:32:27,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash 505907598, now seen corresponding path program 1 times [2022-11-03 02:32:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:27,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843253930] [2022-11-03 02:32:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:27,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4553 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4551 trivial. 0 not checked. [2022-11-03 02:32:28,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:28,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843253930] [2022-11-03 02:32:28,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843253930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:32:28,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834708015] [2022-11-03 02:32:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:28,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:28,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:28,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:32:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:29,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 4394 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:32:30,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4553 backedges. 1283 proven. 0 refuted. 0 times theorem prover too weak. 3270 trivial. 0 not checked. [2022-11-03 02:32:30,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:32:30,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834708015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:30,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:32:30,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-03 02:32:30,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839007270] [2022-11-03 02:32:30,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:30,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:32:30,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:30,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:32:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:32:30,107 INFO L87 Difference]: Start difference. First operand 10611 states and 15387 transitions. Second operand has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:32:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:33,669 INFO L93 Difference]: Finished difference Result 21158 states and 30829 transitions. [2022-11-03 02:32:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:32:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 438 [2022-11-03 02:32:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:33,719 INFO L225 Difference]: With dead ends: 21158 [2022-11-03 02:32:33,720 INFO L226 Difference]: Without dead ends: 10624 [2022-11-03 02:32:33,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:32:33,752 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4113 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:33,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4113 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 02:32:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2022-11-03 02:32:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 10624. [2022-11-03 02:32:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10624 states, 7282 states have (on average 1.403323262839879) internal successors, (10219), 7476 states have internal predecessors, (10219), 2456 states have call successors, (2456), 898 states have call predecessors, (2456), 885 states have return successors, (2725), 2357 states have call predecessors, (2725), 2455 states have call successors, (2725) [2022-11-03 02:32:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 15400 transitions. [2022-11-03 02:32:34,367 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 15400 transitions. Word has length 438 [2022-11-03 02:32:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:34,368 INFO L495 AbstractCegarLoop]: Abstraction has 10624 states and 15400 transitions. [2022-11-03 02:32:34,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:32:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 15400 transitions. [2022-11-03 02:32:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-03 02:32:34,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:34,404 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:34,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:34,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:32:34,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1726082136, now seen corresponding path program 1 times [2022-11-03 02:32:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:34,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194365450] [2022-11-03 02:32:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4552 trivial. 0 not checked. [2022-11-03 02:32:35,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:35,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194365450] [2022-11-03 02:32:35,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194365450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:32:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069122107] [2022-11-03 02:32:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:35,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:35,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:35,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c28eb06-56f7-46bf-a9a9-e30a5bf44ffd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:32:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 4424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:32:37,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 1285 proven. 1 refuted. 0 times theorem prover too weak. 3272 trivial. 0 not checked. [2022-11-03 02:32:37,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4552 trivial. 0 not checked. [2022-11-03 02:32:37,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069122107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:37,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [92118343] [2022-11-03 02:32:37,751 INFO L159 IcfgInterpreter]: Started Sifa with 226 locations of interest [2022-11-03 02:32:37,752 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:32:37,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:32:37,762 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:32:37,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:32:43,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:43,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:32:43,771 INFO L244 Elim1Store]: Index analysis took 383 ms [2022-11-03 02:33:11,039 WARN L234 SmtUtils]: Spent 27.21s on a formula simplification. DAG size of input: 1455 DAG size of output: 727 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:33:11,047 INFO L356 Elim1Store]: treesize reduction 3442, result has 25.5 percent of original size [2022-11-03 02:33:11,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 94 select indices, 94 select index equivalence classes, 4190 disjoint index pairs (out of 4371 index pairs), introduced 94 new quantified variables, introduced 273 case distinctions, treesize of input 484 treesize of output 1477 [2022-11-03 02:33:13,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:13,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 91 select indices, 91 select index equivalence classes, 4280 disjoint index pairs (out of 4095 index pairs), introduced 91 new quantified variables, introduced 0 case distinctions, treesize of input 465 treesize of output 739 [2022-11-03 02:33:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:29,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 94 select indices, 94 select index equivalence classes, 4371 disjoint index pairs (out of 4371 index pairs), introduced 94 new quantified variables, introduced 0 case distinctions, treesize of input 471 treesize of output 283 [2022-11-03 02:33:31,415 INFO L244 Elim1Store]: Index analysis took 189 ms [2022-11-03 02:33:31,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 191 select indices, 191 select index equivalence classes, 17768 disjoint index pairs (out of 18145 index pairs), introduced 191 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 574 [2022-11-03 02:33:32,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:32,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:32,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 93 select indices, 93 select index equivalence classes, 4280 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 280 [2022-11-03 02:33:45,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:45,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:45,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 93 select indices, 93 select index equivalence classes, 4280 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 280 [2022-11-03 02:33:46,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 191 select indices, 191 select index equivalence classes, 17768 disjoint index pairs (out of 18145 index pairs), introduced 191 new quantified variables, introduced 0 case distinctions, treesize of input 1716 treesize of output 574 [2022-11-03 02:33:48,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:33:48,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 94 select indices, 94 select index equivalence classes, 4371 disjoint index pairs (out of 4371 index pairs), introduced 94 new quantified variables, introduced 0 case distinctions, treesize of input 471 treesize of output 283