./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/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_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/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_652eb158-4768-4757-9cd3-6575d8e851f2/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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- 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 02:11:26,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:11:26,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:11:26,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:11:26,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:11:26,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:11:26,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:11:26,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:11:26,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:11:26,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:11:26,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:11:26,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:11:26,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:11:26,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:11:26,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:11:26,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:11:26,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:11:26,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:11:26,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:11:26,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:11:26,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:11:26,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:11:26,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:11:26,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:11:26,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:11:26,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:11:26,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:11:26,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:11:26,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:11:26,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:11:26,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:11:26,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:11:26,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:11:26,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:11:26,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:11:26,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:11:26,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:11:26,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:11:26,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:11:26,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:11:26,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:11:26,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:11:26,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:11:26,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:11:26,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:11:26,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:11:26,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:11:26,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:11:26,202 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:11:26,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:11:26,203 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:11:26,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:11:26,203 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:11:26,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:11:26,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:11:26,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:11:26,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:11:26,204 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:11:26,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:11:26,204 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:11:26,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:11:26,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:11:26,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:11:26,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:11:26,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:11:26,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:11:26,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:11:26,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:11:26,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:11:26,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:11:26,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:11:26,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:26,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:11:26,208 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:11:26,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:11:26,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:11:26,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:11:26,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:11:26,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:11:26,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:11:26,210 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_652eb158-4768-4757-9cd3-6575d8e851f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2022-11-03 02:11:26,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:11:26,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:11:26,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:11:26,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:11:26,521 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:11:26,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:11:26,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/d05bb75f2/f115ff101c4c42f196e54c9d1646f41a/FLAG3d93c7b3c [2022-11-03 02:11:27,518 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:11:27,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:11:27,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/d05bb75f2/f115ff101c4c42f196e54c9d1646f41a/FLAG3d93c7b3c [2022-11-03 02:11:27,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/d05bb75f2/f115ff101c4c42f196e54c9d1646f41a [2022-11-03 02:11:27,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:11:27,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:11:27,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:27,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:11:27,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:11:27,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:27" (1/1) ... [2022-11-03 02:11:27,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677ca63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:27, skipping insertion in model container [2022-11-03 02:11:27,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:11:27" (1/1) ... [2022-11-03 02:11:27,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:11:28,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:11:31,050 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2022-11-03 02:11:31,056 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2022-11-03 02:11:31,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:31,150 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:11:31,546 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2022-11-03 02:11:31,547 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2022-11-03 02:11:31,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:11:31,777 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:11:31,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31 WrapperNode [2022-11-03 02:11:31,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:11:31,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:31,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:11:31,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:11:31,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:31,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,097 INFO L138 Inliner]: procedures = 434, calls = 2034, calls flagged for inlining = 218, calls inlined = 203, statements flattened = 4923 [2022-11-03 02:11:32,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:11:32,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:11:32,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:11:32,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:11:32,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:11:32,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:11:32,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:11:32,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:11:32,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (1/1) ... [2022-11-03 02:11:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:11:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:32,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:11:32,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:11:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:11:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:11:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:11:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:11:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:11:32,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:11:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-03 02:11:32,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-03 02:11:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:11:32,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:11:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:11:32,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:11:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure w840_remove1 [2022-11-03 02:11:32,495 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_remove1 [2022-11-03 02:11:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_88 [2022-11-03 02:11:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_88 [2022-11-03 02:11:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:11:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:11:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:11:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:11:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:11:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:11:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:11:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:11:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure update_link [2022-11-03 02:11:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure update_link [2022-11-03 02:11:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:11:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:11:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:11:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:11:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:11:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:11:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:11:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:11:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:11:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:11:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:11:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:11:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2022-11-03 02:11:32,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2022-11-03 02:11:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:11:32,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:11:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:11:32,500 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:11:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:11:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:11:32,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:11:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:11:32,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:11:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:11:32,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:11:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:11:32,502 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:11:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:11:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:11:32,502 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:11:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:11:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:11:32,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:11:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:11:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 02:11:32,503 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 02:11:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:11:32,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:11:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure init_rxtx_rings [2022-11-03 02:11:32,504 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rxtx_rings [2022-11-03 02:11:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:11:32,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:11:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:11:32,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:11:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:11:32,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:11:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:11:32,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:11:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2022-11-03 02:11:32,506 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2022-11-03 02:11:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:11:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:11:32,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:11:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:11:32,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:11:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:11:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-03 02:11:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-03 02:11:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:11:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:11:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:11:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:11:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:11:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:11:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:11:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:11:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:11:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:11:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 02:11:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 02:11:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:11:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:11:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:11:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:11:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:11:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:11:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:11:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:11:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure update_csr6 [2022-11-03 02:11:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure update_csr6 [2022-11-03 02:11:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure w840_resume [2022-11-03 02:11:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_resume [2022-11-03 02:11:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:11:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:11:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:11:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:11:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:11:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:11:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:11:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:11:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-03 02:11:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-03 02:11:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:11:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:11:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:11:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:11:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:11:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:11:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:11:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:11:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:11:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:11:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:11:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-03 02:11:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-03 02:11:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:11:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:11:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:11:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:11:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:11:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:11:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:11:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:11:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:11:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:11:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_87 [2022-11-03 02:11:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_87 [2022-11-03 02:11:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:11:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:11:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:11:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:11:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:11:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:11:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:11:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-03 02:11:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-03 02:11:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-03 02:11:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-03 02:11:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:11:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:11:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:11:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:11:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:11:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:11:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:11:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:11:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:11:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:11:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:11:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_95 [2022-11-03 02:11:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_95 [2022-11-03 02:11:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_96 [2022-11-03 02:11:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_96 [2022-11-03 02:11:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 02:11:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 02:11:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:11:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:11:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 02:11:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 02:11:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:11:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:11:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:11:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:11:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:11:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:11:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure free_rxtx_rings [2022-11-03 02:11:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rxtx_rings [2022-11-03 02:11:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:11:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:11:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:11:33,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:11:33,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:11:33,773 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:11:37,008 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:11:37,117 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:11:38,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:11:38,618 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 02:11:38,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:38 BoogieIcfgContainer [2022-11-03 02:11:38,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:11:38,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:11:38,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:11:38,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:11:38,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:11:27" (1/3) ... [2022-11-03 02:11:38,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878cf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:38, skipping insertion in model container [2022-11-03 02:11:38,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:11:31" (2/3) ... [2022-11-03 02:11:38,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7878cf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:11:38, skipping insertion in model container [2022-11-03 02:11:38,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:11:38" (3/3) ... [2022-11-03 02:11:38,635 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:11:38,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:11:38,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:11:38,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:11:38,775 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;@3bf08563, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:11:38,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:11:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 1200 states, 675 states have (on average 1.2874074074074073) internal successors, (869), 697 states have internal predecessors, (869), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) [2022-11-03 02:11:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 02:11:38,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:38,816 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:11:38,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1297958084, now seen corresponding path program 1 times [2022-11-03 02:11:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:38,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92019761] [2022-11-03 02:11:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:38,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-03 02:11:39,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:39,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92019761] [2022-11-03 02:11:39,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92019761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:39,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:39,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:39,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284486746] [2022-11-03 02:11:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:39,923 INFO L87 Difference]: Start difference. First operand has 1200 states, 675 states have (on average 1.2874074074074073) internal successors, (869), 697 states have internal predecessors, (869), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:11:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:42,746 INFO L93 Difference]: Finished difference Result 3342 states and 4880 transitions. [2022-11-03 02:11:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:42,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 138 [2022-11-03 02:11:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:42,792 INFO L225 Difference]: With dead ends: 3342 [2022-11-03 02:11:42,792 INFO L226 Difference]: Without dead ends: 2105 [2022-11-03 02:11:42,812 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 02:11:42,816 INFO L413 NwaCegarLoop]: 1871 mSDtfsCounter, 1434 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:42,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 3310 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:11:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2022-11-03 02:11:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2101. [2022-11-03 02:11:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 1190 states have (on average 1.2739495798319327) internal successors, (1516), 1227 states have internal predecessors, (1516), 751 states have call successors, (751), 160 states have call predecessors, (751), 159 states have return successors, (756), 739 states have call predecessors, (756), 751 states have call successors, (756) [2022-11-03 02:11:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3023 transitions. [2022-11-03 02:11:43,108 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3023 transitions. Word has length 138 [2022-11-03 02:11:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:43,110 INFO L495 AbstractCegarLoop]: Abstraction has 2101 states and 3023 transitions. [2022-11-03 02:11:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:11:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3023 transitions. [2022-11-03 02:11:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 02:11:43,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:43,131 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:11:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:11:43,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash -405504832, now seen corresponding path program 1 times [2022-11-03 02:11:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:43,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43104797] [2022-11-03 02:11:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:43,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-03 02:11:43,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43104797] [2022-11-03 02:11:43,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43104797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:43,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:43,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808965799] [2022-11-03 02:11:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:43,639 INFO L87 Difference]: Start difference. First operand 2101 states and 3023 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:11:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:45,884 INFO L93 Difference]: Finished difference Result 5984 states and 8561 transitions. [2022-11-03 02:11:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:45,885 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), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 165 [2022-11-03 02:11:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:45,919 INFO L225 Difference]: With dead ends: 5984 [2022-11-03 02:11:45,920 INFO L226 Difference]: Without dead ends: 3900 [2022-11-03 02:11:45,933 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 02:11:45,940 INFO L413 NwaCegarLoop]: 1808 mSDtfsCounter, 1425 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:45,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 3211 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:11:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2022-11-03 02:11:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3895. [2022-11-03 02:11:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 2188 states have (on average 1.2577696526508226) internal successors, (2752), 2261 states have internal predecessors, (2752), 1392 states have call successors, (1392), 316 states have call predecessors, (1392), 314 states have return successors, (1405), 1365 states have call predecessors, (1405), 1392 states have call successors, (1405) [2022-11-03 02:11:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5549 transitions. [2022-11-03 02:11:46,266 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5549 transitions. Word has length 165 [2022-11-03 02:11:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:46,266 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 5549 transitions. [2022-11-03 02:11:46,267 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), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:11:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5549 transitions. [2022-11-03 02:11:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 02:11:46,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:46,274 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:11:46,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:11:46,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1487084844, now seen corresponding path program 1 times [2022-11-03 02:11:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:46,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659637524] [2022-11-03 02:11:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-03 02:11:47,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659637524] [2022-11-03 02:11:47,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659637524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:47,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:47,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:11:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131863719] [2022-11-03 02:11:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:11:47,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:11:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:47,057 INFO L87 Difference]: Start difference. First operand 3895 states and 5549 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:11:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:53,090 INFO L93 Difference]: Finished difference Result 12076 states and 17045 transitions. [2022-11-03 02:11:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:11:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 159 [2022-11-03 02:11:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:53,142 INFO L225 Difference]: With dead ends: 12076 [2022-11-03 02:11:53,142 INFO L226 Difference]: Without dead ends: 8198 [2022-11-03 02:11:53,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:11:53,162 INFO L413 NwaCegarLoop]: 2331 mSDtfsCounter, 3622 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 3530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:53,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3746 Valid, 4725 Invalid, 3530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:11:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2022-11-03 02:11:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 8178. [2022-11-03 02:11:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 4712 states have (on average 1.2606112054329373) internal successors, (5940), 4859 states have internal predecessors, (5940), 2741 states have call successors, (2741), 728 states have call predecessors, (2741), 724 states have return successors, (2754), 2701 states have call predecessors, (2754), 2741 states have call successors, (2754) [2022-11-03 02:11:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 11435 transitions. [2022-11-03 02:11:53,687 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 11435 transitions. Word has length 159 [2022-11-03 02:11:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:53,689 INFO L495 AbstractCegarLoop]: Abstraction has 8178 states and 11435 transitions. [2022-11-03 02:11:53,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:11:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 11435 transitions. [2022-11-03 02:11:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-03 02:11:53,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:53,698 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 8, 8, 8, 5, 5, 3, 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] [2022-11-03 02:11:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:11:53,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash -161082968, now seen corresponding path program 1 times [2022-11-03 02:11:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929786558] [2022-11-03 02:11:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-03 02:11:54,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929786558] [2022-11-03 02:11:54,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929786558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:54,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:54,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167909896] [2022-11-03 02:11:54,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:54,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:54,206 INFO L87 Difference]: Start difference. First operand 8178 states and 11435 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:11:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:57,257 INFO L93 Difference]: Finished difference Result 18296 states and 25581 transitions. [2022-11-03 02:11:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 202 [2022-11-03 02:11:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:57,324 INFO L225 Difference]: With dead ends: 18296 [2022-11-03 02:11:57,324 INFO L226 Difference]: Without dead ends: 10135 [2022-11-03 02:11:57,362 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 02:11:57,363 INFO L413 NwaCegarLoop]: 2285 mSDtfsCounter, 1025 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:57,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 3684 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:11:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2022-11-03 02:11:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 10129. [2022-11-03 02:11:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10129 states, 5879 states have (on average 1.260588535465215) internal successors, (7411), 6059 states have internal predecessors, (7411), 3343 states have call successors, (3343), 910 states have call predecessors, (3343), 906 states have return successors, (3356), 3299 states have call predecessors, (3356), 3343 states have call successors, (3356) [2022-11-03 02:11:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 14110 transitions. [2022-11-03 02:11:58,224 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 14110 transitions. Word has length 202 [2022-11-03 02:11:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:58,226 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 14110 transitions. [2022-11-03 02:11:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:11:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 14110 transitions. [2022-11-03 02:11:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-03 02:11:58,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:58,237 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:58,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:11:58,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:11:58,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2097496315, now seen corresponding path program 1 times [2022-11-03 02:11:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168813350] [2022-11-03 02:11:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-03 02:11:58,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:58,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168813350] [2022-11-03 02:11:58,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168813350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:58,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:58,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019003394] [2022-11-03 02:11:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:58,760 INFO L87 Difference]: Start difference. First operand 10129 states and 14110 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:12:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:00,585 INFO L93 Difference]: Finished difference Result 20349 states and 28429 transitions. [2022-11-03 02:12:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:00,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 264 [2022-11-03 02:12:00,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:00,654 INFO L225 Difference]: With dead ends: 20349 [2022-11-03 02:12:00,654 INFO L226 Difference]: Without dead ends: 10237 [2022-11-03 02:12:00,692 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 02:12:00,694 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 4 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:00,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2873 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:12:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10237 states. [2022-11-03 02:12:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10237 to 10165. [2022-11-03 02:12:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10165 states, 5915 states have (on average 1.259002535925613) internal successors, (7447), 6095 states have internal predecessors, (7447), 3343 states have call successors, (3343), 910 states have call predecessors, (3343), 906 states have return successors, (3356), 3299 states have call predecessors, (3356), 3343 states have call successors, (3356) [2022-11-03 02:12:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10165 states to 10165 states and 14146 transitions. [2022-11-03 02:12:01,267 INFO L78 Accepts]: Start accepts. Automaton has 10165 states and 14146 transitions. Word has length 264 [2022-11-03 02:12:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:01,268 INFO L495 AbstractCegarLoop]: Abstraction has 10165 states and 14146 transitions. [2022-11-03 02:12:01,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:12:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 10165 states and 14146 transitions. [2022-11-03 02:12:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:12:01,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:01,278 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:01,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:12:01,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash -283563066, now seen corresponding path program 1 times [2022-11-03 02:12:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:01,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920360513] [2022-11-03 02:12:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:01,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-03 02:12:01,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920360513] [2022-11-03 02:12:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920360513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:12:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372549052] [2022-11-03 02:12:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:01,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:12:01,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:12:01,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:12:01,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:12:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:03,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:12:03,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:12:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-03 02:12:03,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:12:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-03 02:12:03,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372549052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:12:03,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1774305721] [2022-11-03 02:12:03,372 INFO L159 IcfgInterpreter]: Started Sifa with 143 locations of interest [2022-11-03 02:12:03,372 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:12:03,377 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:12:03,382 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:12:03,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:14:56,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:14:56,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:15:13,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:15:13,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:15:13,860 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:15:13,863 INFO L158 Benchmark]: Toolchain (without parser) took 225928.37ms. Allocated memory was 102.8MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 70.8MB in the beginning and 481.3MB in the end (delta: -410.5MB). Peak memory consumption was 907.8MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,863 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:15:13,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3841.15ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 70.5MB in the beginning and 66.2MB in the end (delta: 4.2MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 318.77ms. Allocated memory is still 180.4MB. Free memory was 66.2MB in the beginning and 85.6MB in the end (delta: -19.3MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,865 INFO L158 Benchmark]: Boogie Preprocessor took 318.86ms. Allocated memory is still 180.4MB. Free memory was 85.6MB in the beginning and 90.7MB in the end (delta: -5.2MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,865 INFO L158 Benchmark]: RCFGBuilder took 6206.34ms. Allocated memory was 180.4MB in the beginning and 423.6MB in the end (delta: 243.3MB). Free memory was 89.9MB in the beginning and 182.0MB in the end (delta: -92.1MB). Peak memory consumption was 228.5MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,865 INFO L158 Benchmark]: TraceAbstraction took 215235.33ms. Allocated memory was 423.6MB in the beginning and 1.3GB in the end (delta: 857.7MB). Free memory was 182.0MB in the beginning and 481.3MB in the end (delta: -299.3MB). Peak memory consumption was 698.3MB. Max. memory is 16.1GB. [2022-11-03 02:15:13,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3841.15ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 70.5MB in the beginning and 66.2MB in the end (delta: 4.2MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 318.77ms. Allocated memory is still 180.4MB. Free memory was 66.2MB in the beginning and 85.6MB in the end (delta: -19.3MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 318.86ms. Allocated memory is still 180.4MB. Free memory was 85.6MB in the beginning and 90.7MB in the end (delta: -5.2MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6206.34ms. Allocated memory was 180.4MB in the beginning and 423.6MB in the end (delta: 243.3MB). Free memory was 89.9MB in the beginning and 182.0MB in the end (delta: -92.1MB). Peak memory consumption was 228.5MB. Max. memory is 16.1GB. * TraceAbstraction took 215235.33ms. Allocated memory was 423.6MB in the beginning and 1.3GB in the end (delta: 857.7MB). Free memory was 182.0MB in the beginning and 481.3MB in the end (delta: -299.3MB). Peak memory consumption was 698.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:15:13,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/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_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- 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 02:15:16,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:15:16,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:15:16,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:15:16,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:15:16,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:15:16,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:15:16,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:15:16,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:15:16,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:15:16,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:15:16,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:15:16,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:15:16,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:15:16,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:15:16,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:15:16,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:15:16,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:15:16,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:15:16,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:15:16,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:15:16,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:15:16,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:15:16,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:15:16,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:15:16,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:15:16,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:15:16,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:15:16,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:15:16,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:15:16,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:15:16,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:15:16,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:15:16,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:15:16,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:15:16,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:15:16,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:15:16,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:15:16,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:15:16,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:15:16,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:15:16,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:15:16,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:15:16,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:15:16,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:15:16,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:15:16,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:15:16,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:15:16,391 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:15:16,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:15:16,392 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:15:16,392 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:15:16,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:15:16,394 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:15:16,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:15:16,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:15:16,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:15:16,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:15:16,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:15:16,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:15:16,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:15:16,397 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:15:16,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:15:16,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:15:16,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:15:16,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:15:16,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:15:16,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:15:16,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:16,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:15:16,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:15:16,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:15:16,401 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:15:16,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:15:16,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:15:16,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:15:16,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:15:16,402 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_652eb158-4768-4757-9cd3-6575d8e851f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2022-11-03 02:15:16,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:15:16,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:15:16,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:15:16,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:15:16,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:15:16,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:15:16,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/8f0fc2d50/360101dbb4d14fb4a4bde4fc8f40441c/FLAG642b19810 [2022-11-03 02:15:17,910 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:15:17,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:15:17,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/8f0fc2d50/360101dbb4d14fb4a4bde4fc8f40441c/FLAG642b19810 [2022-11-03 02:15:18,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/data/8f0fc2d50/360101dbb4d14fb4a4bde4fc8f40441c [2022-11-03 02:15:18,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:15:18,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:15:18,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:18,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:15:18,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:15:18,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:18" (1/1) ... [2022-11-03 02:15:18,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c569659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:18, skipping insertion in model container [2022-11-03 02:15:18,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:18" (1/1) ... [2022-11-03 02:15:18,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:15:18,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:15:21,347 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2022-11-03 02:15:21,351 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2022-11-03 02:15:21,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:21,449 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:15:21,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:15:21,926 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2022-11-03 02:15:21,927 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2022-11-03 02:15:21,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:22,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:15:22,336 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2022-11-03 02:15:22,337 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_652eb158-4768-4757-9cd3-6575d8e851f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2022-11-03 02:15:22,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:22,627 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:15:22,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22 WrapperNode [2022-11-03 02:15:22,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:22,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:22,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:15:22,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:15:22,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:22,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,053 INFO L138 Inliner]: procedures = 448, calls = 2034, calls flagged for inlining = 218, calls inlined = 203, statements flattened = 4771 [2022-11-03 02:15:23,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:23,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:15:23,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:15:23,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:15:23,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:15:23,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:15:23,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:15:23,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:15:23,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (1/1) ... [2022-11-03 02:15:23,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:23,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:15:23,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:15:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:15:23,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:15:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:15:23,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:15:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:15:23,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:15:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-03 02:15:23,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-03 02:15:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:15:23,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:15:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:15:23,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:15:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure w840_remove1 [2022-11-03 02:15:23,569 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_remove1 [2022-11-03 02:15:23,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_88 [2022-11-03 02:15:23,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_88 [2022-11-03 02:15:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:15:23,570 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:15:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:15:23,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:15:23,570 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:15:23,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:15:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:15:23,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:15:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure update_link [2022-11-03 02:15:23,571 INFO L138 BoogieDeclarations]: Found implementation of procedure update_link [2022-11-03 02:15:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:15:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:15:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:15:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:15:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:15:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:15:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:15:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:15:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:15:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:15:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:15:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:15:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2022-11-03 02:15:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2022-11-03 02:15:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:15:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:15:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:15:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:15:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:15:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:15:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:15:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:15:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:15:23,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:15:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:15:23,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:15:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:15:23,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:15:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:15:23,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:15:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:15:23,577 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:15:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:15:23,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:15:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 02:15:23,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 02:15:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:15:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:15:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure init_rxtx_rings [2022-11-03 02:15:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rxtx_rings [2022-11-03 02:15:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:15:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:15:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:15:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:15:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:15:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:15:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:15:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:15:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2022-11-03 02:15:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2022-11-03 02:15:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:15:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:15:23,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:15:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:15:23,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:15:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:15:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-03 02:15:23,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-03 02:15:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:15:23,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:15:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:15:23,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:15:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:15:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:15:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:15:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:15:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:15:23,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:15:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:15:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:15:23,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:15:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 02:15:23,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 02:15:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:15:23,583 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:15:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:15:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:15:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:15:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:15:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure update_csr6 [2022-11-03 02:15:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure update_csr6 [2022-11-03 02:15:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:15:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure w840_resume [2022-11-03 02:15:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure w840_resume [2022-11-03 02:15:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:15:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:15:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:15:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:15:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:15:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:15:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:15:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:15:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:15:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:15:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:15:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:15:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-03 02:15:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-03 02:15:23,587 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:15:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:15:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:15:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:15:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:15:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:15:23,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 02:15:23,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:15:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:15:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:15:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:15:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-03 02:15:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-03 02:15:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:15:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:15:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:15:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:15:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:15:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:15:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:15:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:15:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:15:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:15:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:15:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_87 [2022-11-03 02:15:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_87 [2022-11-03 02:15:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:15:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:15:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:15:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:15:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-03 02:15:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-11-03 02:15:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:15:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:15:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:15:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 02:15:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:15:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:15:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-03 02:15:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-03 02:15:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-03 02:15:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-03 02:15:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:15:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:15:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:15:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:15:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:15:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:15:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:15:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:15:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:15:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_95 [2022-11-03 02:15:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_95 [2022-11-03 02:15:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_96 [2022-11-03 02:15:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_96 [2022-11-03 02:15:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 02:15:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 02:15:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:15:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:15:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 02:15:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 02:15:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:15:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:15:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:15:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:15:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:15:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:15:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure free_rxtx_rings [2022-11-03 02:15:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rxtx_rings [2022-11-03 02:15:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:15:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:15:24,410 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:15:24,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:15:27,535 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:16:05,180 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:16:05,273 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:16:05,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:16:05,296 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 02:16:05,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:05 BoogieIcfgContainer [2022-11-03 02:16:05,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:16:05,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:16:05,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:16:05,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:16:05,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:15:18" (1/3) ... [2022-11-03 02:16:05,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79182f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:05, skipping insertion in model container [2022-11-03 02:16:05,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:22" (2/3) ... [2022-11-03 02:16:05,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79182f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:05, skipping insertion in model container [2022-11-03 02:16:05,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:05" (3/3) ... [2022-11-03 02:16:05,309 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2022-11-03 02:16:05,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:16:05,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:16:05,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:16:05,420 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;@3712a3da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:16:05,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:16:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1675 states, 1150 states have (on average 1.2860869565217392) internal successors, (1479), 1172 states have internal predecessors, (1479), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) [2022-11-03 02:16:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 02:16:05,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:05,465 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:16:05,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1902264864, now seen corresponding path program 1 times [2022-11-03 02:16:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:05,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635859332] [2022-11-03 02:16:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:05,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:05,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:16:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:07,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:07,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-03 02:16:07,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:07,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:07,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635859332] [2022-11-03 02:16:07,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635859332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:07,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:07,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:07,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52966011] [2022-11-03 02:16:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:07,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:07,365 INFO L87 Difference]: Start difference. First operand has 1675 states, 1150 states have (on average 1.2860869565217392) internal successors, (1479), 1172 states have internal predecessors, (1479), 441 states have call successors, (441), 84 states have call predecessors, (441), 83 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:16:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:08,022 INFO L93 Difference]: Finished difference Result 4629 states and 6534 transitions. [2022-11-03 02:16:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:08,025 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), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2022-11-03 02:16:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:08,065 INFO L225 Difference]: With dead ends: 4629 [2022-11-03 02:16:08,065 INFO L226 Difference]: Without dead ends: 2907 [2022-11-03 02:16:08,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 02:16:08,086 INFO L413 NwaCegarLoop]: 2733 mSDtfsCounter, 1894 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4942 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4942 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-11-03 02:16:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2903. [2022-11-03 02:16:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 1992 states have (on average 1.2565261044176708) internal successors, (2503), 2029 states have internal predecessors, (2503), 751 states have call successors, (751), 160 states have call predecessors, (751), 159 states have return successors, (756), 739 states have call predecessors, (756), 751 states have call successors, (756) [2022-11-03 02:16:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4010 transitions. [2022-11-03 02:16:08,404 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4010 transitions. Word has length 161 [2022-11-03 02:16:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:08,410 INFO L495 AbstractCegarLoop]: Abstraction has 2903 states and 4010 transitions. [2022-11-03 02:16:08,410 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), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:16:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4010 transitions. [2022-11-03 02:16:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 02:16:08,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:08,431 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:16:08,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:16:08,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:08,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:08,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1442200294, now seen corresponding path program 1 times [2022-11-03 02:16:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:08,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706851972] [2022-11-03 02:16:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:08,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:08,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:16:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:10,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 02:16:10,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:10,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:10,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706851972] [2022-11-03 02:16:10,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706851972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:10,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:10,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550790552] [2022-11-03 02:16:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:10,458 INFO L87 Difference]: Start difference. First operand 2903 states and 4010 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:11,131 INFO L93 Difference]: Finished difference Result 8232 states and 11348 transitions. [2022-11-03 02:16:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 196 [2022-11-03 02:16:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:11,164 INFO L225 Difference]: With dead ends: 8232 [2022-11-03 02:16:11,165 INFO L226 Difference]: Without dead ends: 5350 [2022-11-03 02:16:11,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 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 02:16:11,180 INFO L413 NwaCegarLoop]: 2616 mSDtfsCounter, 1891 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:11,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 4785 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2022-11-03 02:16:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5345. [2022-11-03 02:16:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 3638 states have (on average 1.2523364485981308) internal successors, (4556), 3711 states have internal predecessors, (4556), 1392 states have call successors, (1392), 316 states have call predecessors, (1392), 314 states have return successors, (1405), 1365 states have call predecessors, (1405), 1392 states have call successors, (1405) [2022-11-03 02:16:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 7353 transitions. [2022-11-03 02:16:11,570 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 7353 transitions. Word has length 196 [2022-11-03 02:16:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:11,572 INFO L495 AbstractCegarLoop]: Abstraction has 5345 states and 7353 transitions. [2022-11-03 02:16:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 7353 transitions. [2022-11-03 02:16:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 02:16:11,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:11,579 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 02:16:11,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:11,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1923880728, now seen corresponding path program 1 times [2022-11-03 02:16:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:11,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911844356] [2022-11-03 02:16:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:11,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:11,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:16:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:13,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-03 02:16:13,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:13,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:13,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911844356] [2022-11-03 02:16:13,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911844356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:13,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:13,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758404756] [2022-11-03 02:16:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:13,479 INFO L87 Difference]: Start difference. First operand 5345 states and 7353 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:14,317 INFO L93 Difference]: Finished difference Result 13336 states and 18326 transitions. [2022-11-03 02:16:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:14,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 190 [2022-11-03 02:16:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:14,370 INFO L225 Difference]: With dead ends: 13336 [2022-11-03 02:16:14,371 INFO L226 Difference]: Without dead ends: 8012 [2022-11-03 02:16:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 02:16:14,400 INFO L413 NwaCegarLoop]: 2939 mSDtfsCounter, 1370 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:14,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 5128 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2022-11-03 02:16:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8006. [2022-11-03 02:16:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8006 states, 5532 states have (on average 1.257411424439624) internal successors, (6956), 5638 states have internal predecessors, (6956), 1982 states have call successors, (1982), 493 states have call predecessors, (1982), 491 states have return successors, (1995), 1951 states have call predecessors, (1995), 1982 states have call successors, (1995) [2022-11-03 02:16:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 10933 transitions. [2022-11-03 02:16:14,939 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 10933 transitions. Word has length 190 [2022-11-03 02:16:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:14,946 INFO L495 AbstractCegarLoop]: Abstraction has 8006 states and 10933 transitions. [2022-11-03 02:16:14,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:16:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 10933 transitions. [2022-11-03 02:16:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-03 02:16:14,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:14,956 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 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] [2022-11-03 02:16:15,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:15,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -839902035, now seen corresponding path program 1 times [2022-11-03 02:16:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:15,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922052780] [2022-11-03 02:16:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:15,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:15,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:16:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:16,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:16,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-11-03 02:16:17,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:17,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:17,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922052780] [2022-11-03 02:16:17,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922052780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:17,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:17,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390660120] [2022-11-03 02:16:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:17,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:17,190 INFO L87 Difference]: Start difference. First operand 8006 states and 10933 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 02:16:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:18,053 INFO L93 Difference]: Finished difference Result 18685 states and 25516 transitions. [2022-11-03 02:16:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:18,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 250 [2022-11-03 02:16:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:18,149 INFO L225 Difference]: With dead ends: 18685 [2022-11-03 02:16:18,149 INFO L226 Difference]: Without dead ends: 10700 [2022-11-03 02:16:18,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 248 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 02:16:18,186 INFO L413 NwaCegarLoop]: 3608 mSDtfsCounter, 1366 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 5786 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:18,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 5786 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2022-11-03 02:16:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 10694. [2022-11-03 02:16:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10694 states, 7436 states have (on average 1.2595481441635288) internal successors, (9366), 7575 states have internal predecessors, (9366), 2584 states have call successors, (2584), 675 states have call predecessors, (2584), 673 states have return successors, (2597), 2549 states have call predecessors, (2597), 2584 states have call successors, (2597) [2022-11-03 02:16:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 14547 transitions. [2022-11-03 02:16:18,873 INFO L78 Accepts]: Start accepts. Automaton has 10694 states and 14547 transitions. Word has length 250 [2022-11-03 02:16:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:18,875 INFO L495 AbstractCegarLoop]: Abstraction has 10694 states and 14547 transitions. [2022-11-03 02:16:18,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 02:16:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10694 states and 14547 transitions. [2022-11-03 02:16:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-03 02:16:18,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:18,886 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:18,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:19,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:19,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1774395965, now seen corresponding path program 1 times [2022-11-03 02:16:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:19,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131032061] [2022-11-03 02:16:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:19,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:19,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:19,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:19,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:16:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:20,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:21,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-03 02:16:21,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:21,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:21,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131032061] [2022-11-03 02:16:21,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131032061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:21,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:21,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325370472] [2022-11-03 02:16:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:21,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:21,074 INFO L87 Difference]: Start difference. First operand 10694 states and 14547 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:16:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:22,043 INFO L93 Difference]: Finished difference Result 24026 states and 32682 transitions. [2022-11-03 02:16:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 324 [2022-11-03 02:16:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:22,106 INFO L225 Difference]: With dead ends: 24026 [2022-11-03 02:16:22,106 INFO L226 Difference]: Without dead ends: 13353 [2022-11-03 02:16:22,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 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 02:16:22,146 INFO L413 NwaCegarLoop]: 3609 mSDtfsCounter, 1370 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:22,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 5794 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13353 states. [2022-11-03 02:16:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13353 to 13347. [2022-11-03 02:16:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13347 states, 9318 states have (on average 1.2614294913071475) internal successors, (11754), 9490 states have internal predecessors, (11754), 3174 states have call successors, (3174), 856 states have call predecessors, (3174), 854 states have return successors, (3187), 3135 states have call predecessors, (3187), 3174 states have call successors, (3187) [2022-11-03 02:16:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13347 states to 13347 states and 18115 transitions. [2022-11-03 02:16:22,921 INFO L78 Accepts]: Start accepts. Automaton has 13347 states and 18115 transitions. Word has length 324 [2022-11-03 02:16:22,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:22,922 INFO L495 AbstractCegarLoop]: Abstraction has 13347 states and 18115 transitions. [2022-11-03 02:16:22,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:16:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13347 states and 18115 transitions. [2022-11-03 02:16:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-03 02:16:22,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:22,933 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:22,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:23,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:23,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1489530433, now seen corresponding path program 1 times [2022-11-03 02:16:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932733389] [2022-11-03 02:16:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:23,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:23,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:23,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:16:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:24,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:24,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-03 02:16:24,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:24,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932733389] [2022-11-03 02:16:24,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932733389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:24,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:24,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050184727] [2022-11-03 02:16:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:24,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:24,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:24,993 INFO L87 Difference]: Start difference. First operand 13347 states and 18115 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:16:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:26,051 INFO L93 Difference]: Finished difference Result 29917 states and 40621 transitions. [2022-11-03 02:16:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:26,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 324 [2022-11-03 02:16:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:26,122 INFO L225 Difference]: With dead ends: 29917 [2022-11-03 02:16:26,123 INFO L226 Difference]: Without dead ends: 16591 [2022-11-03 02:16:26,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 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 02:16:26,162 INFO L413 NwaCegarLoop]: 3738 mSDtfsCounter, 1726 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 5714 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:26,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 5714 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16591 states. [2022-11-03 02:16:27,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16591 to 16585. [2022-11-03 02:16:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16585 states, 11617 states have (on average 1.2627184298872343) internal successors, (14669), 11824 states have internal predecessors, (14669), 3896 states have call successors, (3896), 1073 states have call predecessors, (3896), 1071 states have return successors, (3909), 3851 states have call predecessors, (3909), 3896 states have call successors, (3909) [2022-11-03 02:16:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16585 states to 16585 states and 22474 transitions. [2022-11-03 02:16:27,328 INFO L78 Accepts]: Start accepts. Automaton has 16585 states and 22474 transitions. Word has length 324 [2022-11-03 02:16:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:27,333 INFO L495 AbstractCegarLoop]: Abstraction has 16585 states and 22474 transitions. [2022-11-03 02:16:27,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:16:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 16585 states and 22474 transitions. [2022-11-03 02:16:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-03 02:16:27,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:27,348 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:27,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:27,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:27,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1672895254, now seen corresponding path program 1 times [2022-11-03 02:16:27,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:27,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776912638] [2022-11-03 02:16:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:27,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:27,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:27,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:16:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:29,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:29,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2022-11-03 02:16:29,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:29,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:29,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776912638] [2022-11-03 02:16:29,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776912638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:29,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:29,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:29,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868694780] [2022-11-03 02:16:29,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:29,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:29,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:29,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:29,502 INFO L87 Difference]: Start difference. First operand 16585 states and 22474 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:16:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:30,715 INFO L93 Difference]: Finished difference Result 35848 states and 48596 transitions. [2022-11-03 02:16:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 384 [2022-11-03 02:16:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:30,796 INFO L225 Difference]: With dead ends: 35848 [2022-11-03 02:16:30,796 INFO L226 Difference]: Without dead ends: 19284 [2022-11-03 02:16:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 382 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 02:16:30,838 INFO L413 NwaCegarLoop]: 3477 mSDtfsCounter, 1383 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:30,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 5662 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19284 states. [2022-11-03 02:16:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19284 to 19278. [2022-11-03 02:16:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19278 states, 13535 states have (on average 1.2634650905060953) internal successors, (17101), 13775 states have internal predecessors, (17101), 4490 states have call successors, (4490), 1254 states have call predecessors, (4490), 1252 states have return successors, (4503), 4441 states have call predecessors, (4503), 4490 states have call successors, (4503) [2022-11-03 02:16:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19278 states to 19278 states and 26094 transitions. [2022-11-03 02:16:32,183 INFO L78 Accepts]: Start accepts. Automaton has 19278 states and 26094 transitions. Word has length 384 [2022-11-03 02:16:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:32,184 INFO L495 AbstractCegarLoop]: Abstraction has 19278 states and 26094 transitions. [2022-11-03 02:16:32,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:16:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19278 states and 26094 transitions. [2022-11-03 02:16:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-03 02:16:32,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:32,203 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:32,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:32,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1591031144, now seen corresponding path program 1 times [2022-11-03 02:16:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929473336] [2022-11-03 02:16:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:32,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:32,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:32,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:32,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:16:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:34,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2022-11-03 02:16:34,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:34,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:34,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929473336] [2022-11-03 02:16:34,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929473336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:34,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:34,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499930440] [2022-11-03 02:16:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:34,287 INFO L87 Difference]: Start difference. First operand 19278 states and 26094 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:16:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:35,336 INFO L93 Difference]: Finished difference Result 41186 states and 55776 transitions. [2022-11-03 02:16:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 384 [2022-11-03 02:16:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:35,439 INFO L225 Difference]: With dead ends: 41186 [2022-11-03 02:16:35,439 INFO L226 Difference]: Without dead ends: 21929 [2022-11-03 02:16:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 382 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 02:16:35,499 INFO L413 NwaCegarLoop]: 3609 mSDtfsCounter, 1370 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:35,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 5793 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21929 states. [2022-11-03 02:16:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21929 to 21923. [2022-11-03 02:16:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21923 states, 15413 states have (on average 1.2641925647180952) internal successors, (19485), 15686 states have internal predecessors, (19485), 5080 states have call successors, (5080), 1431 states have call predecessors, (5080), 1429 states have return successors, (5093), 5027 states have call predecessors, (5093), 5080 states have call successors, (5093) [2022-11-03 02:16:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21923 states to 21923 states and 29658 transitions. [2022-11-03 02:16:36,723 INFO L78 Accepts]: Start accepts. Automaton has 21923 states and 29658 transitions. Word has length 384 [2022-11-03 02:16:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:36,724 INFO L495 AbstractCegarLoop]: Abstraction has 21923 states and 29658 transitions. [2022-11-03 02:16:36,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:16:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21923 states and 29658 transitions. [2022-11-03 02:16:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-11-03 02:16:36,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:36,742 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 12, 12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:36,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:16:36,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:36,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1353331897, now seen corresponding path program 1 times [2022-11-03 02:16:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743958358] [2022-11-03 02:16:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:36,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:36,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:36,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:37,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:16:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:38,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:16:38,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-03 02:16:39,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:39,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743958358] [2022-11-03 02:16:39,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743958358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:39,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:39,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:16:39,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951022965] [2022-11-03 02:16:39,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:39,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:16:39,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:16:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:16:39,454 INFO L87 Difference]: Start difference. First operand 21923 states and 29658 transitions. Second operand has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-03 02:16:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:50,669 INFO L93 Difference]: Finished difference Result 66281 states and 90297 transitions. [2022-11-03 02:16:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 02:16:50,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) Word has length 425 [2022-11-03 02:16:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:50,861 INFO L225 Difference]: With dead ends: 66281 [2022-11-03 02:16:50,861 INFO L226 Difference]: Without dead ends: 44319 [2022-11-03 02:16:50,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:16:50,956 INFO L413 NwaCegarLoop]: 3911 mSDtfsCounter, 4280 mSDsluCounter, 34358 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 38269 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:50,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4305 Valid, 38269 Invalid, 3696 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [703 Valid, 2993 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:16:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44319 states. [2022-11-03 02:16:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44319 to 38949. [2022-11-03 02:16:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38949 states, 27444 states have (on average 1.2667978428800466) internal successors, (34766), 27923 states have internal predecessors, (34766), 8961 states have call successors, (8961), 2545 states have call predecessors, (8961), 2543 states have return successors, (8976), 8878 states have call predecessors, (8976), 8961 states have call successors, (8976) [2022-11-03 02:16:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38949 states to 38949 states and 52703 transitions. [2022-11-03 02:16:54,062 INFO L78 Accepts]: Start accepts. Automaton has 38949 states and 52703 transitions. Word has length 425 [2022-11-03 02:16:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:54,064 INFO L495 AbstractCegarLoop]: Abstraction has 38949 states and 52703 transitions. [2022-11-03 02:16:54,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2022-11-03 02:16:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 38949 states and 52703 transitions. [2022-11-03 02:16:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-11-03 02:16:54,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:54,084 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 14, 14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:54,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:16:54,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:16:54,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash 844076042, now seen corresponding path program 1 times [2022-11-03 02:16:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:16:54,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071821722] [2022-11-03 02:16:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:54,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:16:54,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:16:54,312 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:16:54,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:16:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:16:56,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2022-11-03 02:16:56,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:56,769 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:16:56,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071821722] [2022-11-03 02:16:56,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071821722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:56,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:56,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:16:56,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167273355] [2022-11-03 02:16:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:16:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:16:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:16:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:56,772 INFO L87 Difference]: Start difference. First operand 38949 states and 52703 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:17:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:02,134 INFO L93 Difference]: Finished difference Result 91861 states and 126185 transitions. [2022-11-03 02:17:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:17:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 461 [2022-11-03 02:17:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:02,326 INFO L225 Difference]: With dead ends: 91861 [2022-11-03 02:17:02,327 INFO L226 Difference]: Without dead ends: 52933 [2022-11-03 02:17:02,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:17:02,467 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 2584 mSDsluCounter, 7781 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 10954 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:02,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 10954 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:17:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52933 states. [2022-11-03 02:17:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52933 to 38961. [2022-11-03 02:17:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38961 states, 27456 states have (on average 1.2666812354312353) internal successors, (34778), 27935 states have internal predecessors, (34778), 8961 states have call successors, (8961), 2545 states have call predecessors, (8961), 2543 states have return successors, (8976), 8878 states have call predecessors, (8976), 8961 states have call successors, (8976) [2022-11-03 02:17:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38961 states to 38961 states and 52715 transitions. [2022-11-03 02:17:05,733 INFO L78 Accepts]: Start accepts. Automaton has 38961 states and 52715 transitions. Word has length 461 [2022-11-03 02:17:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:05,734 INFO L495 AbstractCegarLoop]: Abstraction has 38961 states and 52715 transitions. [2022-11-03 02:17:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:17:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38961 states and 52715 transitions. [2022-11-03 02:17:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-03 02:17:05,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:05,752 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 16, 16, 16, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:05,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:17:05,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:17:05,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2147068313, now seen corresponding path program 1 times [2022-11-03 02:17:05,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:17:05,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970048283] [2022-11-03 02:17:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:17:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:17:05,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:17:05,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:17:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:08,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:17:08,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:17:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2022-11-03 02:17:08,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:17:08,524 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:17:08,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970048283] [2022-11-03 02:17:08,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970048283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:08,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:08,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:17:08,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104596875] [2022-11-03 02:17:08,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:08,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:17:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:17:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:17:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:17:08,527 INFO L87 Difference]: Start difference. First operand 38961 states and 52715 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:17:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:14,263 INFO L93 Difference]: Finished difference Result 92057 states and 126449 transitions. [2022-11-03 02:17:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 482 [2022-11-03 02:17:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:14,412 INFO L225 Difference]: With dead ends: 92057 [2022-11-03 02:17:14,413 INFO L226 Difference]: Without dead ends: 53117 [2022-11-03 02:17:14,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:17:14,485 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 1565 mSDsluCounter, 11812 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 15009 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:14,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 15009 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:17:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53117 states. [2022-11-03 02:17:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53117 to 38989. [2022-11-03 02:17:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38989 states, 27476 states have (on average 1.266487116028534) internal successors, (34798), 27959 states have internal predecessors, (34798), 8961 states have call successors, (8961), 2545 states have call predecessors, (8961), 2551 states have return successors, (9000), 8882 states have call predecessors, (9000), 8961 states have call successors, (9000) [2022-11-03 02:17:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38989 states to 38989 states and 52759 transitions. [2022-11-03 02:17:17,910 INFO L78 Accepts]: Start accepts. Automaton has 38989 states and 52759 transitions. Word has length 482 [2022-11-03 02:17:17,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:17,911 INFO L495 AbstractCegarLoop]: Abstraction has 38989 states and 52759 transitions. [2022-11-03 02:17:17,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:17:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 38989 states and 52759 transitions. [2022-11-03 02:17:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-11-03 02:17:17,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:17,921 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 10, 10, 10, 10, 10, 9, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:17,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:17:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:17:18,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1839571311, now seen corresponding path program 1 times [2022-11-03 02:17:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:17:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092366496] [2022-11-03 02:17:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:18,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:17:18,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:17:18,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:17:18,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652eb158-4768-4757-9cd3-6575d8e851f2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process