./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8 --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 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:17:14,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:17:14,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:17:14,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:17:14,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:17:14,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:17:14,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:17:14,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:17:14,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:17:14,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:17:14,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:17:14,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:17:14,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:17:14,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:17:14,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:17:14,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:17:14,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:17:14,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:17:14,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:17:14,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:17:14,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:17:14,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:17:14,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:17:14,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:17:14,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:17:14,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:17:14,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:17:14,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:17:14,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:17:14,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:17:14,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:17:14,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:17:14,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:17:14,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:17:14,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:17:14,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:17:14,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:17:14,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:17:14,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:17:14,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:17:14,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:17:14,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:17:15,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:17:15,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:17:15,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:17:15,029 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:17:15,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:17:15,030 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:17:15,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:17:15,030 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:17:15,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:17:15,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:17:15,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:17:15,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:17:15,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:17:15,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:17:15,040 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:17:15,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:17:15,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:17:15,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:17:15,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:17:15,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:17:15,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:17:15,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:17:15,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:17:15,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:17:15,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:17:15,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:17:15,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:17:15,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:15,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:17:15,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:17:15,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:17:15,044 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:17:15,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:17:15,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:17:15,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:17:15,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:17:15,045 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-07 02:17:15,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:17:15,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:17:15,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:17:15,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:17:15,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:17:15,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 02:17:15,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/e449a8d15/44d4d20f30e849faaa9608877779e9b6/FLAG34e9b1f9a [2021-11-07 02:17:16,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:17:16,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 02:17:16,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/e449a8d15/44d4d20f30e849faaa9608877779e9b6/FLAG34e9b1f9a [2021-11-07 02:17:16,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/e449a8d15/44d4d20f30e849faaa9608877779e9b6 [2021-11-07 02:17:16,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:17:16,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:17:16,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:16,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:17:16,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:17:16,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:16" (1/1) ... [2021-11-07 02:17:16,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2277a4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:16, skipping insertion in model container [2021-11-07 02:17:16,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:16" (1/1) ... [2021-11-07 02:17:16,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:17:16,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:18,732 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,066 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,093 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,114 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,302 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,317 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,318 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,332 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,333 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,334 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,339 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,346 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,360 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:19,756 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,176 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,177 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,182 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,190 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,197 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,202 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,209 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,209 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:17:20,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-07 02:17:20,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:20,427 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:17:20,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fdcbdf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:20, skipping insertion in model container [2021-11-07 02:17:20,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:20,429 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:17:20,433 INFO L168 Benchmark]: Toolchain (without parser) took 3619.06 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 79.5 MB in the beginning and 91.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:20,433 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:17:20,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3616.68 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 79.5 MB in the beginning and 91.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:20,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3616.68 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 79.5 MB in the beginning and 91.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3943]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8 --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 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:17:22,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:17:22,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:17:22,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:17:22,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:17:22,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:17:22,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:17:22,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:17:22,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:17:22,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:17:22,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:17:22,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:17:22,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:17:22,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:17:22,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:17:22,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:17:22,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:17:22,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:17:22,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:17:22,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:17:22,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:17:22,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:17:22,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:17:22,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:17:22,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:17:22,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:17:22,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:17:22,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:17:22,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:17:22,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:17:22,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:17:22,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:17:22,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:17:22,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:17:22,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:17:22,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:17:22,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:17:22,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:17:22,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:17:22,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:17:22,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:17:22,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:17:23,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:17:23,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:17:23,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:17:23,013 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:17:23,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:17:23,014 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:17:23,014 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:17:23,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:17:23,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:17:23,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:17:23,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:17:23,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:17:23,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:17:23,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:17:23,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:17:23,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:17:23,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:17:23,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:17:23,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:17:23,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:17:23,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:17:23,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:17:23,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:17:23,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:23,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:17:23,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:17:23,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:17:23,021 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:17:23,022 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:17:23,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:17:23,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:17:23,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:17:23,023 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_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-07 02:17:23,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:17:23,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:17:23,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:17:23,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:17:23,504 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:17:23,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 02:17:23,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/5cdb5a06d/9544339520df455093c0f16266878564/FLAGaff1527f6 [2021-11-07 02:17:24,593 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:17:24,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 02:17:24,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/5cdb5a06d/9544339520df455093c0f16266878564/FLAGaff1527f6 [2021-11-07 02:17:24,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/data/5cdb5a06d/9544339520df455093c0f16266878564 [2021-11-07 02:17:25,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:17:25,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:17:25,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:25,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:17:25,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:17:25,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:24" (1/1) ... [2021-11-07 02:17:25,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3e7163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:25, skipping insertion in model container [2021-11-07 02:17:25,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:24" (1/1) ... [2021-11-07 02:17:25,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:17:25,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:27,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-07 02:17:27,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:28,051 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:17:28,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:28,618 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-07 02:17:28,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:28,675 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:17:29,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-07 02:17:29,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:29,622 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:17:29,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29 WrapperNode [2021-11-07 02:17:29,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:29,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:29,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:17:29,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:17:29,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:29,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:30,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:30,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:17:30,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:17:30,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:17:30,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:30,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:30,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:30,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:30,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:31,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:31,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:31,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:17:31,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:17:31,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:17:31,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:17:31,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (1/1) ... [2021-11-07 02:17:31,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:17:31,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:17:31,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:17:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-07 02:17:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-07 02:17:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-07 02:17:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-07 02:17:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-07 02:17:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-07 02:17:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-07 02:17:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-07 02:17:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-07 02:17:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-07 02:17:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-07 02:17:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-07 02:17:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-07 02:17:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-07 02:17:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 02:17:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-07 02:17:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-07 02:17:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-07 02:17:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-07 02:17:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-07 02:17:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-07 02:17:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-07 02:17:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-07 02:17:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-07 02:17:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-07 02:17:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-07 02:17:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-07 02:17:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-07 02:17:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:17:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:17:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 02:17:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:17:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:17:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:17:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-07 02:17:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-07 02:17:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-07 02:17:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-07 02:17:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:17:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:17:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:17:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:17:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 02:17:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:17:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~C_INT [2021-11-07 02:17:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~C_INT [2021-11-07 02:17:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-07 02:17:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-07 02:17:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2021-11-07 02:17:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2021-11-07 02:17:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:17:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-07 02:17:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-07 02:17:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:17:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:17:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:17:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-07 02:17:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-07 02:17:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-07 02:17:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-07 02:17:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:17:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:17:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-07 02:17:31,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-07 02:17:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:17:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:17:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:17:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:17:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-07 02:17:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-07 02:17:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 02:17:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 02:17:31,276 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-07 02:17:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-07 02:20:15,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:20:15,108 INFO L299 CfgBuilder]: Removed 2491 assume(true) statements. [2021-11-07 02:20:15,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:15 BoogieIcfgContainer [2021-11-07 02:20:15,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:20:15,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:20:15,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:20:15,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:20:15,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:17:24" (1/3) ... [2021-11-07 02:20:15,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0dadb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:15, skipping insertion in model container [2021-11-07 02:20:15,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:29" (2/3) ... [2021-11-07 02:20:15,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0dadb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:15, skipping insertion in model container [2021-11-07 02:20:15,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:15" (3/3) ... [2021-11-07 02:20:15,126 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-07 02:20:15,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:20:15,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 02:20:15,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:20:15,230 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:20:15,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 02:20:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 2759 states, 2618 states have (on average 1.3808250572956455) internal successors, (3615), 2637 states have internal predecessors, (3615), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 02:20:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 02:20:15,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:15,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:15,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:20:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1913804113, now seen corresponding path program 1 times [2021-11-07 02:20:15,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:15,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776856463] [2021-11-07 02:20:15,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:15,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:15,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:15,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:20:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:42,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 3871 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:20:42,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:43,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:20:44,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:44,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776856463] [2021-11-07 02:20:44,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776856463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:44,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:44,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:20:44,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093546604] [2021-11-07 02:20:44,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:20:44,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:44,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:20:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:20:44,628 INFO L87 Difference]: Start difference. First operand has 2759 states, 2618 states have (on average 1.3808250572956455) internal successors, (3615), 2637 states have internal predecessors, (3615), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:44,815 INFO L93 Difference]: Finished difference Result 5514 states and 7692 transitions. [2021-11-07 02:20:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:20:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 02:20:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:44,850 INFO L225 Difference]: With dead ends: 5514 [2021-11-07 02:20:44,851 INFO L226 Difference]: Without dead ends: 2744 [2021-11-07 02:20:44,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:20:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2021-11-07 02:20:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2744. [2021-11-07 02:20:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2604 states have (on average 1.34715821812596) internal successors, (3508), 2622 states have internal predecessors, (3508), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 02:20:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3702 transitions. [2021-11-07 02:20:45,051 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3702 transitions. Word has length 110 [2021-11-07 02:20:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:45,052 INFO L470 AbstractCegarLoop]: Abstraction has 2744 states and 3702 transitions. [2021-11-07 02:20:45,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3702 transitions. [2021-11-07 02:20:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 02:20:45,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:45,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:45,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:45,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:45,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:20:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 851673957, now seen corresponding path program 1 times [2021-11-07 02:20:45,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:45,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646999075] [2021-11-07 02:20:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:45,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:45,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:45,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:21:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:12,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 3871 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:21:12,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:13,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:14,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:14,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646999075] [2021-11-07 02:21:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646999075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:14,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:14,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:14,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359590518] [2021-11-07 02:21:14,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:14,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:14,254 INFO L87 Difference]: Start difference. First operand 2744 states and 3702 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:15,502 INFO L93 Difference]: Finished difference Result 5457 states and 7389 transitions. [2021-11-07 02:21:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:15,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 02:21:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:15,526 INFO L225 Difference]: With dead ends: 5457 [2021-11-07 02:21:15,526 INFO L226 Difference]: Without dead ends: 2761 [2021-11-07 02:21:15,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-07 02:21:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2761. [2021-11-07 02:21:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2621 states have (on average 1.344906524227394) internal successors, (3525), 2639 states have internal predecessors, (3525), 97 states have call successors, (97), 32 states have call predecessors, (97), 32 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-07 02:21:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3719 transitions. [2021-11-07 02:21:15,659 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3719 transitions. Word has length 110 [2021-11-07 02:21:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:15,661 INFO L470 AbstractCegarLoop]: Abstraction has 2761 states and 3719 transitions. [2021-11-07 02:21:15,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3719 transitions. [2021-11-07 02:21:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 02:21:15,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:15,675 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:15,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:15,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:15,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:21:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1918096000, now seen corresponding path program 1 times [2021-11-07 02:21:15,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:15,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198310192] [2021-11-07 02:21:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:15,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:15,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:15,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:21:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:43,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3946 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:21:45,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:21:46,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198310192] [2021-11-07 02:21:46,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198310192] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1501300187] [2021-11-07 02:21:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:46,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:46,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:46,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:46,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:21:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:52,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 3946 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:52,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:21:55,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:21:58,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1501300187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:58,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:21:58,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314989821] [2021-11-07 02:21:58,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:21:58,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:21:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:58,411 INFO L87 Difference]: Start difference. First operand 2761 states and 3719 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:59,393 INFO L93 Difference]: Finished difference Result 8073 states and 10982 transitions. [2021-11-07 02:21:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 02:21:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:59,449 INFO L225 Difference]: With dead ends: 8073 [2021-11-07 02:21:59,450 INFO L226 Difference]: Without dead ends: 5388 [2021-11-07 02:21:59,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2021-11-07 02:21:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 5368. [2021-11-07 02:21:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5099 states have (on average 1.3494802902529908) internal successors, (6881), 5125 states have internal predecessors, (6881), 194 states have call successors, (194), 64 states have call predecessors, (194), 64 states have return successors, (204), 182 states have call predecessors, (204), 194 states have call successors, (204) [2021-11-07 02:21:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 7279 transitions. [2021-11-07 02:21:59,717 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 7279 transitions. Word has length 125 [2021-11-07 02:21:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:59,720 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 7279 transitions. [2021-11-07 02:21:59,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 7279 transitions. [2021-11-07 02:21:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:21:59,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:59,740 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:59,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:00,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:00,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:00,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:22:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 565949218, now seen corresponding path program 1 times [2021-11-07 02:22:00,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:00,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909429183] [2021-11-07 02:22:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:00,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:00,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:00,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:22:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:30,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 4166 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:22:30,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:32,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:34,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:34,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909429183] [2021-11-07 02:22:34,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909429183] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:34,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055779052] [2021-11-07 02:22:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:34,518 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:34,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:34,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:34,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:22:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:41,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 4166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:22:41,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:22:42,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:22:43,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1055779052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:43,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:22:43,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:22:43,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681851288] [2021-11-07 02:22:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:22:43,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:22:43,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:22:43,122 INFO L87 Difference]: Start difference. First operand 5368 states and 7279 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:44,937 INFO L93 Difference]: Finished difference Result 15565 states and 21261 transitions. [2021-11-07 02:22:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:22:44,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 02:22:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:45,061 INFO L225 Difference]: With dead ends: 15565 [2021-11-07 02:22:45,063 INFO L226 Difference]: Without dead ends: 10296 [2021-11-07 02:22:45,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:22:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2021-11-07 02:22:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 10210. [2021-11-07 02:22:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10210 states, 9701 states have (on average 1.3541902896608597) internal successors, (13137), 9741 states have internal predecessors, (13137), 374 states have call successors, (374), 124 states have call predecessors, (374), 124 states have return successors, (499), 352 states have call predecessors, (499), 374 states have call successors, (499) [2021-11-07 02:22:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14010 transitions. [2021-11-07 02:22:45,682 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14010 transitions. Word has length 137 [2021-11-07 02:22:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:45,684 INFO L470 AbstractCegarLoop]: Abstraction has 10210 states and 14010 transitions. [2021-11-07 02:22:45,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14010 transitions. [2021-11-07 02:22:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:22:45,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:45,701 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:45,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:45,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:46,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:46,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:22:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 266143401, now seen corresponding path program 1 times [2021-11-07 02:22:46,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:46,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615582176] [2021-11-07 02:22:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:46,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:46,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:46,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:23:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:14,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:23:14,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:23:15,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:23:17,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615582176] [2021-11-07 02:23:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615582176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:23:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1229191368] [2021-11-07 02:23:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:17,544 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:23:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:23:17,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:23:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:23:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:23:23,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:23:23,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:23:24,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1229191368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:24,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:23:24,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:23:24,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744934031] [2021-11-07 02:23:24,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:23:24,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:23:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:23:24,645 INFO L87 Difference]: Start difference. First operand 10210 states and 14010 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:31,921 INFO L93 Difference]: Finished difference Result 28102 states and 38486 transitions. [2021-11-07 02:23:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 02:23:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:32,057 INFO L225 Difference]: With dead ends: 28102 [2021-11-07 02:23:32,057 INFO L226 Difference]: Without dead ends: 17991 [2021-11-07 02:23:32,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:23:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-11-07 02:23:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 17846. [2021-11-07 02:23:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17846 states, 16967 states have (on average 1.352802498968586) internal successors, (22953), 17037 states have internal predecessors, (22953), 636 states have call successors, (636), 232 states have call predecessors, (636), 232 states have return successors, (856), 592 states have call predecessors, (856), 636 states have call successors, (856) [2021-11-07 02:23:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17846 states to 17846 states and 24445 transitions. [2021-11-07 02:23:32,841 INFO L78 Accepts]: Start accepts. Automaton has 17846 states and 24445 transitions. Word has length 137 [2021-11-07 02:23:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:32,841 INFO L470 AbstractCegarLoop]: Abstraction has 17846 states and 24445 transitions. [2021-11-07 02:23:32,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 17846 states and 24445 transitions. [2021-11-07 02:23:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 02:23:32,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:32,850 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:32,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:33,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:33,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:33,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:23:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash -422235691, now seen corresponding path program 1 times [2021-11-07 02:23:33,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:33,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828393760] [2021-11-07 02:23:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:33,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:33,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:33,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:24:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:01,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 4283 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:24:01,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:24:03,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:24:05,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828393760] [2021-11-07 02:24:05,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828393760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:24:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764445427] [2021-11-07 02:24:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:05,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:24:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:24:05,025 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:24:05,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:24:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:11,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 4283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:24:11,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:24:11,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:24:12,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [764445427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:12,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:24:12,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:24:12,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066081385] [2021-11-07 02:24:12,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:24:12,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:24:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:24:12,682 INFO L87 Difference]: Start difference. First operand 17846 states and 24445 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:14,660 INFO L93 Difference]: Finished difference Result 52312 states and 72283 transitions. [2021-11-07 02:24:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:24:14,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 02:24:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:14,901 INFO L225 Difference]: With dead ends: 52312 [2021-11-07 02:24:14,901 INFO L226 Difference]: Without dead ends: 34565 [2021-11-07 02:24:15,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:24:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34565 states. [2021-11-07 02:24:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34565 to 34470. [2021-11-07 02:24:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34470 states, 32827 states have (on average 1.3525146982666707) internal successors, (44399), 32929 states have internal predecessors, (44399), 1176 states have call successors, (1176), 448 states have call predecessors, (1176), 456 states have return successors, (2280), 1120 states have call predecessors, (2280), 1176 states have call successors, (2280) [2021-11-07 02:24:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34470 states to 34470 states and 47855 transitions. [2021-11-07 02:24:16,922 INFO L78 Accepts]: Start accepts. Automaton has 34470 states and 47855 transitions. Word has length 140 [2021-11-07 02:24:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:16,923 INFO L470 AbstractCegarLoop]: Abstraction has 34470 states and 47855 transitions. [2021-11-07 02:24:16,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 34470 states and 47855 transitions. [2021-11-07 02:24:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-07 02:24:16,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:16,945 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:24:16,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:17,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:17,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:17,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:24:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1887121690, now seen corresponding path program 1 times [2021-11-07 02:24:17,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:17,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720965304] [2021-11-07 02:24:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:17,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:17,384 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:17,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:24:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:46,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 4474 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:24:46,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 02:24:48,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 02:24:51,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:51,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720965304] [2021-11-07 02:24:51,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720965304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:24:51,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895495909] [2021-11-07 02:24:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:51,066 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:24:51,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:24:51,067 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:24:51,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:24:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 4474 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:24:57,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:24:58,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:24:59,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [895495909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:59,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:24:59,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:24:59,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760543715] [2021-11-07 02:24:59,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:24:59,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:24:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:24:59,742 INFO L87 Difference]: Start difference. First operand 34470 states and 47855 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:25:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:02,568 INFO L93 Difference]: Finished difference Result 102532 states and 142399 transitions. [2021-11-07 02:25:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:25:02,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 181 [2021-11-07 02:25:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:03,127 INFO L225 Difference]: With dead ends: 102532 [2021-11-07 02:25:03,127 INFO L226 Difference]: Without dead ends: 68161 [2021-11-07 02:25:03,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:25:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68161 states. [2021-11-07 02:25:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68161 to 68106. [2021-11-07 02:25:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68106 states, 64863 states have (on average 1.3532676564451227) internal successors, (87777), 65057 states have internal predecessors, (87777), 2320 states have call successors, (2320), 896 states have call predecessors, (2320), 912 states have return successors, (4496), 2208 states have call predecessors, (4496), 2320 states have call successors, (4496) [2021-11-07 02:25:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68106 states to 68106 states and 94593 transitions. [2021-11-07 02:25:06,845 INFO L78 Accepts]: Start accepts. Automaton has 68106 states and 94593 transitions. Word has length 181 [2021-11-07 02:25:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:06,846 INFO L470 AbstractCegarLoop]: Abstraction has 68106 states and 94593 transitions. [2021-11-07 02:25:06,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:25:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 68106 states and 94593 transitions. [2021-11-07 02:25:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 02:25:06,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:06,856 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:25:06,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:07,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:07,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:07,280 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:25:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1364129485, now seen corresponding path program 1 times [2021-11-07 02:25:07,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:07,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660181789] [2021-11-07 02:25:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:07,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:07,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:07,300 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:07,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:25:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:38,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 4397 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:25:38,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:25:41,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:25:43,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:43,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660181789] [2021-11-07 02:25:43,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660181789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:43,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [376458935] [2021-11-07 02:25:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:43,696 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:43,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:25:43,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:25:43,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:25:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:51,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 4397 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:25:51,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:25:52,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:25:53,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [376458935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:53,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:25:53,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:25:53,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118318337] [2021-11-07 02:25:53,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:25:53,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:25:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:25:53,298 INFO L87 Difference]: Start difference. First operand 68106 states and 94593 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:57,149 INFO L93 Difference]: Finished difference Result 136116 states and 189077 transitions. [2021-11-07 02:25:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:25:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-07 02:25:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:57,765 INFO L225 Difference]: With dead ends: 136116 [2021-11-07 02:25:57,765 INFO L226 Difference]: Without dead ends: 68109 [2021-11-07 02:25:58,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:25:58,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68109 states. [2021-11-07 02:26:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68109 to 65970. [2021-11-07 02:26:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65970 states, 62727 states have (on average 1.355413139477418) internal successors, (85021), 62921 states have internal predecessors, (85021), 2320 states have call successors, (2320), 896 states have call predecessors, (2320), 912 states have return successors, (4496), 2208 states have call predecessors, (4496), 2320 states have call successors, (4496) [2021-11-07 02:26:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65970 states to 65970 states and 91837 transitions. [2021-11-07 02:26:02,352 INFO L78 Accepts]: Start accepts. Automaton has 65970 states and 91837 transitions. Word has length 180 [2021-11-07 02:26:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:02,353 INFO L470 AbstractCegarLoop]: Abstraction has 65970 states and 91837 transitions. [2021-11-07 02:26:02,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 65970 states and 91837 transitions. [2021-11-07 02:26:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 02:26:02,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:02,382 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:02,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:02,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:02,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:02,808 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:26:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1992026048, now seen corresponding path program 1 times [2021-11-07 02:26:02,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:02,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218740871] [2021-11-07 02:26:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:02,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:02,830 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:26:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:38,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 4284 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:26:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:26:40,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:26:43,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:43,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218740871] [2021-11-07 02:26:43,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218740871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:26:43,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [607441882] [2021-11-07 02:26:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:43,752 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:26:43,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:26:43,753 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:26:43,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:26:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:51,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 4284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:26:51,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:26:53,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:26:55,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [607441882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:55,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:26:55,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 02:26:55,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245286080] [2021-11-07 02:26:55,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:26:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:26:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:26:55,231 INFO L87 Difference]: Start difference. First operand 65970 states and 91837 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:01,766 INFO L93 Difference]: Finished difference Result 131863 states and 183587 transitions. [2021-11-07 02:27:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:27:01,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-07 02:27:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:02,072 INFO L225 Difference]: With dead ends: 131863 [2021-11-07 02:27:02,072 INFO L226 Difference]: Without dead ends: 65984 [2021-11-07 02:27:02,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:27:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65984 states. [2021-11-07 02:27:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65984 to 65972. [2021-11-07 02:27:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65972 states, 62729 states have (on average 1.3553380414162508) internal successors, (85019), 62923 states have internal predecessors, (85019), 2320 states have call successors, (2320), 896 states have call predecessors, (2320), 912 states have return successors, (4496), 2208 states have call predecessors, (4496), 2320 states have call successors, (4496) [2021-11-07 02:27:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65972 states to 65972 states and 91835 transitions. [2021-11-07 02:27:05,392 INFO L78 Accepts]: Start accepts. Automaton has 65972 states and 91835 transitions. Word has length 193 [2021-11-07 02:27:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:05,392 INFO L470 AbstractCegarLoop]: Abstraction has 65972 states and 91835 transitions. [2021-11-07 02:27:05,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:27:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 65972 states and 91835 transitions. [2021-11-07 02:27:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-07 02:27:05,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:05,415 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:27:05,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:27:05,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-07 02:27:05,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:05,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:27:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1456464121, now seen corresponding path program 1 times [2021-11-07 02:27:05,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:05,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673555993] [2021-11-07 02:27:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:05,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:05,854 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:06,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:27:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:41,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 4294 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:27:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:27:44,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:27:47,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:47,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673555993] [2021-11-07 02:27:47,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673555993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:47,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621494011] [2021-11-07 02:27:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:47,587 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:27:47,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:27:47,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:27:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:27:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:56,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 4294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:27:56,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:27:58,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:27:59,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [621494011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:59,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:27:59,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 02:27:59,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679108887] [2021-11-07 02:27:59,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:27:59,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:27:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:27:59,474 INFO L87 Difference]: Start difference. First operand 65972 states and 91835 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:28:09,428 INFO L93 Difference]: Finished difference Result 131870 states and 183585 transitions. [2021-11-07 02:28:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:28:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2021-11-07 02:28:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:28:09,719 INFO L225 Difference]: With dead ends: 131870 [2021-11-07 02:28:09,719 INFO L226 Difference]: Without dead ends: 65965 [2021-11-07 02:28:09,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:28:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65965 states. [2021-11-07 02:28:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65965 to 65855. [2021-11-07 02:28:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65855 states, 62612 states have (on average 1.355554845716476) internal successors, (84874), 62806 states have internal predecessors, (84874), 2320 states have call successors, (2320), 896 states have call predecessors, (2320), 912 states have return successors, (4496), 2208 states have call predecessors, (4496), 2320 states have call successors, (4496) [2021-11-07 02:28:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65855 states to 65855 states and 91690 transitions. [2021-11-07 02:28:13,263 INFO L78 Accepts]: Start accepts. Automaton has 65855 states and 91690 transitions. Word has length 197 [2021-11-07 02:28:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:28:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 65855 states and 91690 transitions. [2021-11-07 02:28:13,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 65855 states and 91690 transitions. [2021-11-07 02:28:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 02:28:13,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:28:13,282 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:28:13,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 02:28:13,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:28:13,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:28:13,684 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:28:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:28:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1261561302, now seen corresponding path program 1 times [2021-11-07 02:28:13,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:28:13,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451782168] [2021-11-07 02:28:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:13,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:28:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:28:13,719 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:28:13,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:28:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 4617 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:28:50,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:28:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:28:54,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:28:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 02:28:58,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:28:58,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451782168] [2021-11-07 02:28:58,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451782168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:28:58,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1389604780] [2021-11-07 02:28:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:58,181 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:28:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:28:58,188 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:28:58,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:29:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:29:07,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 4617 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:29:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:29:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:29:10,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:29:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 02:29:13,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1389604780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:29:13,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:29:13,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 02:29:13,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371982809] [2021-11-07 02:29:13,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:29:13,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:29:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:29:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:29:13,791 INFO L87 Difference]: Start difference. First operand 65855 states and 91690 transitions. Second operand has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:30,172 INFO L93 Difference]: Finished difference Result 131678 states and 183337 transitions. [2021-11-07 02:29:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 02:29:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-11-07 02:29:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:30,464 INFO L225 Difference]: With dead ends: 131678 [2021-11-07 02:29:30,464 INFO L226 Difference]: Without dead ends: 65906 [2021-11-07 02:29:30,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-11-07 02:29:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65906 states. [2021-11-07 02:29:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65906 to 65861. [2021-11-07 02:29:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65861 states, 62618 states have (on average 1.355472867226676) internal successors, (84877), 62812 states have internal predecessors, (84877), 2320 states have call successors, (2320), 896 states have call predecessors, (2320), 912 states have return successors, (4496), 2208 states have call predecessors, (4496), 2320 states have call successors, (4496) [2021-11-07 02:29:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65861 states to 65861 states and 91693 transitions. [2021-11-07 02:29:33,597 INFO L78 Accepts]: Start accepts. Automaton has 65861 states and 91693 transitions. Word has length 215 [2021-11-07 02:29:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:33,597 INFO L470 AbstractCegarLoop]: Abstraction has 65861 states and 91693 transitions. [2021-11-07 02:29:33,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:29:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 65861 states and 91693 transitions. [2021-11-07 02:29:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 02:29:33,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:33,619 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:29:33,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 02:29:33,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:34,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:29:34,020 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 02:29:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1413712801, now seen corresponding path program 1 times [2021-11-07 02:29:34,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:29:34,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688413082] [2021-11-07 02:29:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:29:34,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:29:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:29:34,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:29:34,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c34170d-4ab6-4c20-be06-1098427f649e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:30:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:30:11,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 4704 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:30:11,308 INFO L286 TraceCheckSpWp]: Computing forward predicates...