./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-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF --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 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:52,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:52,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:52,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:52,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:52,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:52,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:52,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:52,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:52,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:52,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:52,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:52,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:52,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:52,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:52,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:52,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:52,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:52,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:52,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:52,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:52,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:52,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:52,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:52,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:52,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:52,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:52,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:52,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:52,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:52,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:52,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:52,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:52,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:52,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:52,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:52,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:52,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:52,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:52,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:52,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:52,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:30:52,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:52,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:52,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:52,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:52,342 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:52,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:52,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:52,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:52,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:52,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:52,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:52,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:52,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:52,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:52,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:52,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:52,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:52,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:52,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:52,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:52,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:52,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:52,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:52,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:52,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:52,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:52,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:52,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:52,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:52,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:52,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:52,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:52,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:52,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:52,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:52,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:52,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:52,377 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2021-11-13 01:30:52,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:52,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:52,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:52,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:52,654 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:52,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2021-11-13 01:30:52,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/8683ac50c/ccb8f7b1e02e40a19356952bfb86b53c/FLAG69d32101d [2021-11-13 01:30:53,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:53,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2021-11-13 01:30:53,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/8683ac50c/ccb8f7b1e02e40a19356952bfb86b53c/FLAG69d32101d [2021-11-13 01:30:54,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/8683ac50c/ccb8f7b1e02e40a19356952bfb86b53c [2021-11-13 01:30:54,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:54,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:54,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:54,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:54,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:54,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:54" (1/1) ... [2021-11-13 01:30:54,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a7f2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:54, skipping insertion in model container [2021-11-13 01:30:54,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:54" (1/1) ... [2021-11-13 01:30:54,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:54,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:55,152 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2021-11-13 01:30:55,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:55,404 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) [2021-11-13 01:30:55,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b456ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55, skipping insertion in model container [2021-11-13 01:30:55,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:55,405 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:55,408 INFO L158 Benchmark]: Toolchain (without parser) took 1330.95ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 59.7MB in the end (delta: 32.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-13 01:30:55,410 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:55,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1328.54ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 59.7MB in the end (delta: 31.9MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-13 01:30:55,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 88.1MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1328.54ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 59.7MB in the end (delta: 31.9MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5975]: 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF --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 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:57,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:57,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:57,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:57,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:57,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:57,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:57,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:57,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:57,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:57,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:57,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:57,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:57,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:57,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:57,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:57,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:57,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:57,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:57,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:57,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:57,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:57,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:57,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:57,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:57,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:57,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:57,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:57,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:57,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:57,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:57,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:57,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:57,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:57,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:57,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:57,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:57,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:57,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:57,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:57,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:57,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:30:57,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:57,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:57,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:57,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:57,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:57,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:57,953 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:57,953 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:57,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:57,954 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:57,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:57,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:57,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:57,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:57,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:57,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:57,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:57,956 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:57,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:57,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:57,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:57,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:57,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:57,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:57,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:57,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:57,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:57,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:57,959 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:57,959 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:57,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:57,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:57,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:57,960 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2021-11-13 01:30:58,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:58,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:58,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:58,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:58,375 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:58,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2021-11-13 01:30:58,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/9fb9b6673/2654d590460544928e1d8a0c7b4a1ee1/FLAGc187a956a [2021-11-13 01:30:59,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:59,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2021-11-13 01:30:59,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/9fb9b6673/2654d590460544928e1d8a0c7b4a1ee1/FLAGc187a956a [2021-11-13 01:30:59,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/data/9fb9b6673/2654d590460544928e1d8a0c7b4a1ee1 [2021-11-13 01:30:59,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:59,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:59,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:59,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:59,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:59,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:59" (1/1) ... [2021-11-13 01:30:59,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54266915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:59, skipping insertion in model container [2021-11-13 01:30:59,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:59" (1/1) ... [2021-11-13 01:30:59,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:31:00,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:00,955 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2021-11-13 01:31:01,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:01,232 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:31:01,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:01,521 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2021-11-13 01:31:01,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:01,596 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:31:01,809 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_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2021-11-13 01:31:01,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:01,960 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:31:01,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01 WrapperNode [2021-11-13 01:31:01,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:01,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:01,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:31:01,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:31:01,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:02,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:31:02,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:31:02,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:31:02,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:31:02,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:31:02,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:31:02,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:31:02,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (1/1) ... [2021-11-13 01:31:02,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:02,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:02,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:31:02,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:31:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:31:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:31:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:31:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:31:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:31:02,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2021-11-13 01:31:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2021-11-13 01:31:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-13 01:31:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-13 01:31:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 01:31:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 01:31:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 01:31:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 01:31:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:31:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:31:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:31:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2021-11-13 01:31:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2021-11-13 01:31:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:31:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:31:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:31:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:31:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:31:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:31:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 01:31:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:31:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:31:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:31:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2021-11-13 01:31:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2021-11-13 01:31:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:31:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:31:03,025 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:31:05,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:05,917 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:31:05,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:05 BoogieIcfgContainer [2021-11-13 01:31:05,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:05,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:05,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:05,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:05,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:59" (1/3) ... [2021-11-13 01:31:05,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1017aed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:05, skipping insertion in model container [2021-11-13 01:31:05,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:01" (2/3) ... [2021-11-13 01:31:05,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1017aed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:05, skipping insertion in model container [2021-11-13 01:31:05,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:05" (3/3) ... [2021-11-13 01:31:05,928 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2021-11-13 01:31:05,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:05,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:31:05,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:31:05,995 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 [2021-11-13 01:31:05,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:31:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-13 01:31:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 01:31:06,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:06,030 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:06,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash 665515163, now seen corresponding path program 1 times [2021-11-13 01:31:06,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:06,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109909907] [2021-11-13 01:31:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:06,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:06,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:06,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:06,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:31:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:07,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:31:07,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 01:31:07,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-13 01:31:08,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:08,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109909907] [2021-11-13 01:31:08,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109909907] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:08,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:08,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:31:08,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699578071] [2021-11-13 01:31:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:08,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:31:08,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:31:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:31:08,101 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:31:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:08,168 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2021-11-13 01:31:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:31:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-11-13 01:31:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:08,194 INFO L225 Difference]: With dead ends: 367 [2021-11-13 01:31:08,194 INFO L226 Difference]: Without dead ends: 170 [2021-11-13 01:31:08,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:31:08,207 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:08,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:31:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-13 01:31:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-13 01:31:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 141 states have internal predecessors, (188), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 01:31:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2021-11-13 01:31:08,289 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2021-11-13 01:31:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:08,290 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2021-11-13 01:31:08,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:31:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2021-11-13 01:31:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 01:31:08,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:08,301 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:08,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:08,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:08,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:08,518 INFO L85 PathProgramCache]: Analyzing trace with hash -96288345, now seen corresponding path program 1 times [2021-11-13 01:31:08,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:08,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398666946] [2021-11-13 01:31:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:08,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:08,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:08,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:31:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:10,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:10,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:10,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:10,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:10,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398666946] [2021-11-13 01:31:10,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398666946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:10,596 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:10,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:31:10,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862206161] [2021-11-13 01:31:10,597 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:10,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:10,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:10,601 INFO L87 Difference]: Start difference. First operand 170 states and 232 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:10,667 INFO L93 Difference]: Finished difference Result 326 states and 445 transitions. [2021-11-13 01:31:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2021-11-13 01:31:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:10,673 INFO L225 Difference]: With dead ends: 326 [2021-11-13 01:31:10,673 INFO L226 Difference]: Without dead ends: 172 [2021-11-13 01:31:10,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:10,675 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.43ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:10,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 5 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 28.43ms Time] [2021-11-13 01:31:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-13 01:31:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-13 01:31:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 138 states have (on average 1.3768115942028984) internal successors, (190), 143 states have internal predecessors, (190), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 01:31:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 234 transitions. [2021-11-13 01:31:10,692 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 234 transitions. Word has length 118 [2021-11-13 01:31:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:10,694 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 234 transitions. [2021-11-13 01:31:10,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 234 transitions. [2021-11-13 01:31:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 01:31:10,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:10,697 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 01:31:10,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:10,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:10,911 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -810375513, now seen corresponding path program 1 times [2021-11-13 01:31:10,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:10,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362822473] [2021-11-13 01:31:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:10,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:10,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:10,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:31:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:12,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:12,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:13,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:13,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362822473] [2021-11-13 01:31:13,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362822473] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:13,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1111782675] [2021-11-13 01:31:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:13,259 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:13,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:13,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 01:31:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:13,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:13,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:14,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:14,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1111782675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:14,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:14,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:14,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525150240] [2021-11-13 01:31:14,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:14,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:14,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:14,541 INFO L87 Difference]: Start difference. First operand 172 states and 234 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:14,791 INFO L93 Difference]: Finished difference Result 437 states and 602 transitions. [2021-11-13 01:31:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2021-11-13 01:31:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:14,797 INFO L225 Difference]: With dead ends: 437 [2021-11-13 01:31:14,797 INFO L226 Difference]: Without dead ends: 285 [2021-11-13 01:31:14,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:14,803 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 180 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 226.27ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:14,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 441 Invalid, 8 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 226.27ms Time] [2021-11-13 01:31:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-13 01:31:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2021-11-13 01:31:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 223 states have (on average 1.4170403587443947) internal successors, (316), 228 states have internal predecessors, (316), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 01:31:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 378 transitions. [2021-11-13 01:31:14,851 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 378 transitions. Word has length 120 [2021-11-13 01:31:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 378 transitions. [2021-11-13 01:31:14,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 378 transitions. [2021-11-13 01:31:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 01:31:14,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:14,857 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 01:31:14,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:15,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:15,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:15,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:15,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1696272988, now seen corresponding path program 1 times [2021-11-13 01:31:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:15,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428210795] [2021-11-13 01:31:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:15,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:15,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:15,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:15,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:31:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:16,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:17,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:17,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:17,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428210795] [2021-11-13 01:31:17,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428210795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:17,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1898452201] [2021-11-13 01:31:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:17,708 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:17,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:17,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 01:31:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:18,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:18,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:19,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1898452201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:19,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619611254] [2021-11-13 01:31:19,287 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:19,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:19,290 INFO L87 Difference]: Start difference. First operand 271 states and 378 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:19,318 INFO L93 Difference]: Finished difference Result 273 states and 379 transitions. [2021-11-13 01:31:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 119 [2021-11-13 01:31:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:19,327 INFO L225 Difference]: With dead ends: 273 [2021-11-13 01:31:19,327 INFO L226 Difference]: Without dead ends: 270 [2021-11-13 01:31:19,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:19,332 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:19,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 229 Invalid, 1 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.69ms Time] [2021-11-13 01:31:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-13 01:31:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-13 01:31:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 223 states have (on average 1.4125560538116593) internal successors, (315), 227 states have internal predecessors, (315), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 01:31:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 376 transitions. [2021-11-13 01:31:19,378 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 376 transitions. Word has length 119 [2021-11-13 01:31:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:19,379 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 376 transitions. [2021-11-13 01:31:19,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 376 transitions. [2021-11-13 01:31:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 01:31:19,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:19,384 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 01:31:19,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:19,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:19,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:19,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:19,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1044868806, now seen corresponding path program 1 times [2021-11-13 01:31:19,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:19,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454709221] [2021-11-13 01:31:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:19,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:19,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:19,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:31:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:21,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:21,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:21,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:21,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:21,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454709221] [2021-11-13 01:31:21,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454709221] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:21,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1807569644] [2021-11-13 01:31:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:21,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:22,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:22,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 01:31:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:22,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:22,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:23,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:23,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1807569644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:23,482 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:23,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:23,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896876558] [2021-11-13 01:31:23,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:23,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:23,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:23,486 INFO L87 Difference]: Start difference. First operand 270 states and 376 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:23,504 INFO L93 Difference]: Finished difference Result 272 states and 377 transitions. [2021-11-13 01:31:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2021-11-13 01:31:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:23,508 INFO L225 Difference]: With dead ends: 272 [2021-11-13 01:31:23,509 INFO L226 Difference]: Without dead ends: 269 [2021-11-13 01:31:23,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:23,510 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.55ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:23,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.55ms Time] [2021-11-13 01:31:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-13 01:31:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-11-13 01:31:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 223 states have (on average 1.4080717488789238) internal successors, (314), 226 states have internal predecessors, (314), 32 states have call successors, (32), 14 states have call predecessors, (32), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 01:31:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2021-11-13 01:31:23,534 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 120 [2021-11-13 01:31:23,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:23,535 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2021-11-13 01:31:23,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2021-11-13 01:31:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 01:31:23,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:23,538 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 01:31:23,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:23,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:23,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:23,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1968786785, now seen corresponding path program 1 times [2021-11-13 01:31:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:23,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256373559] [2021-11-13 01:31:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:23,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:23,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:23,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:31:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:25,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:25,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:25,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:26,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:26,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256373559] [2021-11-13 01:31:26,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256373559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:26,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388807763] [2021-11-13 01:31:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:26,133 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:26,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:26,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:26,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 01:31:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:26,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:26,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:27,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:27,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [388807763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:27,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:27,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:27,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671859981] [2021-11-13 01:31:27,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:27,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:27,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:27,684 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:27,704 INFO L93 Difference]: Finished difference Result 271 states and 375 transitions. [2021-11-13 01:31:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2021-11-13 01:31:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:27,708 INFO L225 Difference]: With dead ends: 271 [2021-11-13 01:31:27,708 INFO L226 Difference]: Without dead ends: 268 [2021-11-13 01:31:27,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:27,709 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 174 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.63ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:27,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 225 Invalid, 1 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.63ms Time] [2021-11-13 01:31:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-13 01:31:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-11-13 01:31:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.4035874439461884) internal successors, (313), 225 states have internal predecessors, (313), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 01:31:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 372 transitions. [2021-11-13 01:31:27,744 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 372 transitions. Word has length 121 [2021-11-13 01:31:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:27,745 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 372 transitions. [2021-11-13 01:31:27,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 372 transitions. [2021-11-13 01:31:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 01:31:27,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:27,749 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:27,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:27,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:28,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:28,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:28,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:28,163 INFO L85 PathProgramCache]: Analyzing trace with hash -902824727, now seen corresponding path program 1 times [2021-11-13 01:31:28,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:28,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486112321] [2021-11-13 01:31:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:28,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:28,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:28,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:31:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:29,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:29,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:29,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:31:30,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:30,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486112321] [2021-11-13 01:31:30,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486112321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:30,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2043946558] [2021-11-13 01:31:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:30,497 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:30,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:30,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:30,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:31:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:31,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:31,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:31,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:32,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2043946558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:32,141 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:32,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:32,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475253642] [2021-11-13 01:31:32,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:32,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:32,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:32,143 INFO L87 Difference]: Start difference. First operand 268 states and 372 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:32,195 INFO L93 Difference]: Finished difference Result 754 states and 1053 transitions. [2021-11-13 01:31:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:32,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2021-11-13 01:31:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:32,202 INFO L225 Difference]: With dead ends: 754 [2021-11-13 01:31:32,202 INFO L226 Difference]: Without dead ends: 498 [2021-11-13 01:31:32,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:32,204 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 163 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:32,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 439 Invalid, 11 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 15.60ms Time] [2021-11-13 01:31:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-13 01:31:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 495. [2021-11-13 01:31:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 416 states have (on average 1.4158653846153846) internal successors, (589), 418 states have internal predecessors, (589), 53 states have call successors, (53), 27 states have call predecessors, (53), 25 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-13 01:31:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 692 transitions. [2021-11-13 01:31:32,241 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 692 transitions. Word has length 122 [2021-11-13 01:31:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:32,242 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 692 transitions. [2021-11-13 01:31:32,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 01:31:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 692 transitions. [2021-11-13 01:31:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-13 01:31:32,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:32,245 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-13 01:31:32,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:32,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:32,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:32,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 492589710, now seen corresponding path program 1 times [2021-11-13 01:31:32,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:32,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958308487] [2021-11-13 01:31:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:32,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:32,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:32,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:31:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-13 01:31:34,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-13 01:31:35,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:35,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958308487] [2021-11-13 01:31:35,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958308487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:35,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [370014098] [2021-11-13 01:31:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:35,236 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:35,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:35,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:35,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 01:31:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:35,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-13 01:31:36,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-13 01:31:36,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [370014098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:36,488 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:36,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 01:31:36,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689378419] [2021-11-13 01:31:36,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:36,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:36,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:36,490 INFO L87 Difference]: Start difference. First operand 495 states and 692 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 01:31:38,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:38,439 INFO L93 Difference]: Finished difference Result 972 states and 1358 transitions. [2021-11-13 01:31:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 161 [2021-11-13 01:31:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:38,445 INFO L225 Difference]: With dead ends: 972 [2021-11-13 01:31:38,445 INFO L226 Difference]: Without dead ends: 497 [2021-11-13 01:31:38,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:38,447 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 185 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1867.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1904.23ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:38,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 595 Invalid, 8 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1904.23ms Time] [2021-11-13 01:31:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-13 01:31:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 495. [2021-11-13 01:31:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 416 states have (on average 1.4110576923076923) internal successors, (587), 418 states have internal predecessors, (587), 53 states have call successors, (53), 27 states have call predecessors, (53), 25 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-13 01:31:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 689 transitions. [2021-11-13 01:31:38,484 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 689 transitions. Word has length 161 [2021-11-13 01:31:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:38,486 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 689 transitions. [2021-11-13 01:31:38,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 01:31:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 689 transitions. [2021-11-13 01:31:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 01:31:38,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:38,490 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-13 01:31:38,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:38,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:38,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:38,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash 17879067, now seen corresponding path program 1 times [2021-11-13 01:31:38,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:38,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864665201] [2021-11-13 01:31:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:38,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:38,898 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:38,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:31:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:40,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-13 01:31:40,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-13 01:31:41,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:41,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864665201] [2021-11-13 01:31:41,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864665201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:41,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655129599] [2021-11-13 01:31:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:41,323 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:41,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:41,323 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:41,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 01:31:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:43,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-13 01:31:44,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-13 01:31:44,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1655129599] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:44,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112421879] [2021-11-13 01:31:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:44,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:31:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:44,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:31:44,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 01:31:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:45,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:31:45,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-13 01:31:45,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-13 01:31:46,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112421879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:46,320 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:31:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [5, 5, 5, 5] total 14 [2021-11-13 01:31:46,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904616154] [2021-11-13 01:31:46,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:46,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:31:46,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:31:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:31:46,322 INFO L87 Difference]: Start difference. First operand 495 states and 689 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 01:31:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:46,634 INFO L93 Difference]: Finished difference Result 1304 states and 1880 transitions. [2021-11-13 01:31:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:31:46,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 166 [2021-11-13 01:31:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:46,642 INFO L225 Difference]: With dead ends: 1304 [2021-11-13 01:31:46,642 INFO L226 Difference]: Without dead ends: 829 [2021-11-13 01:31:46,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 978 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:31:46,646 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 391 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.86ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:46,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 2922 Invalid, 66 Unknown, 0 Unchecked, 15.86ms Time], IncrementalHoareTripleChecker [22 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 137.02ms Time] [2021-11-13 01:31:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-11-13 01:31:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 494. [2021-11-13 01:31:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 416 states have (on average 1.4086538461538463) internal successors, (586), 417 states have internal predecessors, (586), 52 states have call successors, (52), 27 states have call predecessors, (52), 25 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-13 01:31:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 687 transitions. [2021-11-13 01:31:46,694 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 687 transitions. Word has length 166 [2021-11-13 01:31:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:46,698 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 687 transitions. [2021-11-13 01:31:46,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 01:31:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 687 transitions. [2021-11-13 01:31:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-13 01:31:46,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:46,704 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:46,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:46,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:47,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:31:47,319 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 660900448, now seen corresponding path program 1 times [2021-11-13 01:31:47,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:47,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306975229] [2021-11-13 01:31:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:47,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:47,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:47,324 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:47,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:31:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:49,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:49,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-11-13 01:31:49,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-13 01:31:50,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:50,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306975229] [2021-11-13 01:31:50,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306975229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:50,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [946490318] [2021-11-13 01:31:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:50,182 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:50,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:50,183 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:50,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-13 01:31:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:52,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:31:52,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-11-13 01:31:53,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-13 01:31:53,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [946490318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:53,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465106633] [2021-11-13 01:31:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:53,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:31:53,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:53,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:31:53,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 01:31:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:54,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-13 01:31:54,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-13 01:31:55,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465106633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:55,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:31:55,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 14 [2021-11-13 01:31:55,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592118288] [2021-11-13 01:31:55,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:55,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:31:55,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:31:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:31:55,120 INFO L87 Difference]: Start difference. First operand 494 states and 687 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 01:31:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:55,336 INFO L93 Difference]: Finished difference Result 657 states and 945 transitions. [2021-11-13 01:31:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 173 [2021-11-13 01:31:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:55,338 INFO L225 Difference]: With dead ends: 657 [2021-11-13 01:31:55,338 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 01:31:55,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:31:55,341 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 636 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:55,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1160 Invalid, 56 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [35 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 106.29ms Time] [2021-11-13 01:31:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 01:31:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 01:31:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-13 01:31:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 01:31:55,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2021-11-13 01:31:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:55,345 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 01:31:55,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 01:31:55,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 01:31:55,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 01:31:55,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:31:55,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:55,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:55,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:55,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:55,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 01:31:58,963 INFO L861 garLoopResultBuilder]: At program point usbnet_disconnectENTRY(lines 7015 7017) the Hoare annotation is: true [2021-11-13 01:31:58,963 INFO L858 garLoopResultBuilder]: For program point usbnet_disconnectFINAL(lines 7015 7017) no Hoare annotation was computed. [2021-11-13 01:31:58,963 INFO L858 garLoopResultBuilder]: For program point usbnet_disconnectEXIT(lines 7015 7017) no Hoare annotation was computed. [2021-11-13 01:31:58,963 INFO L858 garLoopResultBuilder]: For program point ldv_mutex_lock_udevFINAL(lines 6853 6863) no Hoare annotation was computed. [2021-11-13 01:31:58,963 INFO L854 garLoopResultBuilder]: At program point ldv_mutex_lock_udevENTRY(lines 6853 6863) the Hoare annotation is: (or (not (= ~ldv_mutex_lock~0 (_ bv1 32))) (not (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32))) (not (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32))) (= ~ldv_mutex_udev~0 (_ bv1 32)) (not (= |old(~ldv_mutex_udev~0)| (_ bv1 32)))) [2021-11-13 01:31:58,964 INFO L858 garLoopResultBuilder]: For program point L6856-1(lines 6856 6859) no Hoare annotation was computed. [2021-11-13 01:31:58,964 INFO L858 garLoopResultBuilder]: For program point L6856(lines 6856 6859) no Hoare annotation was computed. [2021-11-13 01:31:58,964 INFO L854 garLoopResultBuilder]: At program point L6857(line 6857) the Hoare annotation is: (or (not (= ~ldv_mutex_lock~0 (_ bv1 32))) (not (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32))) (not (= |old(~ldv_mutex_udev~0)| (_ bv1 32))) (not (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)))) [2021-11-13 01:31:58,964 INFO L858 garLoopResultBuilder]: For program point ldv_mutex_lock_udevEXIT(lines 6853 6863) no Hoare annotation was computed. [2021-11-13 01:31:58,964 INFO L858 garLoopResultBuilder]: For program point L5762-1(line 5762) no Hoare annotation was computed. [2021-11-13 01:31:58,965 INFO L858 garLoopResultBuilder]: For program point ldv_init_zallocFINAL(lines 5757 5767) no Hoare annotation was computed. [2021-11-13 01:31:58,965 INFO L858 garLoopResultBuilder]: For program point ldv_init_zallocEXIT(lines 5757 5767) no Hoare annotation was computed. [2021-11-13 01:31:58,965 INFO L861 garLoopResultBuilder]: At program point ldv_init_zallocENTRY(lines 5757 5767) the Hoare annotation is: true [2021-11-13 01:31:58,965 INFO L858 garLoopResultBuilder]: For program point L5764-1(line 5764) no Hoare annotation was computed. [2021-11-13 01:31:58,965 INFO L861 garLoopResultBuilder]: At program point L5762(line 5762) the Hoare annotation is: true [2021-11-13 01:31:58,965 INFO L861 garLoopResultBuilder]: At program point L5764(line 5764) the Hoare annotation is: true [2021-11-13 01:31:58,965 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5720 5722) the Hoare annotation is: true [2021-11-13 01:31:58,965 INFO L858 garLoopResultBuilder]: For program point L5721-2(lines 5720 5722) no Hoare annotation was computed. [2021-11-13 01:31:58,965 INFO L858 garLoopResultBuilder]: For program point L5721(line 5721) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5720 5722) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L861 garLoopResultBuilder]: At program point ldv_undef_intENTRY(lines 5776 5783) the Hoare annotation is: true [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_undef_intFINAL(lines 5776 5783) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_undef_intEXIT(lines 5776 5783) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_errorFINAL(lines 6329 6335) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L861 garLoopResultBuilder]: At program point ldv_errorENTRY(lines 6329 6335) the Hoare annotation is: true [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6333) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_errorEXIT(lines 6329 6335) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L858 garLoopResultBuilder]: For program point ldv_stopEXIT(lines 5792 5798) no Hoare annotation was computed. [2021-11-13 01:31:58,966 INFO L861 garLoopResultBuilder]: At program point ldv_stopENTRY(lines 5792 5798) the Hoare annotation is: true [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6047(lines 6047 6062) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6080-2(lines 6067 6122) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6113(lines 6113 6116) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6080(lines 6080 6085) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L854 garLoopResultBuilder]: At program point L7005(lines 7004 7006) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6213(line 6213) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L854 garLoopResultBuilder]: At program point L6081(line 6081) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6081-1(line 6081) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L858 garLoopResultBuilder]: For program point L6973(lines 6964 6982) no Hoare annotation was computed. [2021-11-13 01:31:58,967 INFO L861 garLoopResultBuilder]: At program point L6214(line 6214) the Hoare annotation is: true [2021-11-13 01:31:58,968 INFO L854 garLoopResultBuilder]: At program point L6974(line 6974) the Hoare annotation is: false [2021-11-13 01:31:58,968 INFO L858 garLoopResultBuilder]: For program point L6049(lines 6049 6059) no Hoare annotation was computed. [2021-11-13 01:31:58,968 INFO L858 garLoopResultBuilder]: For program point L6050(line 6050) no Hoare annotation was computed. [2021-11-13 01:31:58,968 INFO L858 garLoopResultBuilder]: For program point L5852(lines 5852 5855) no Hoare annotation was computed. [2021-11-13 01:31:58,968 INFO L858 garLoopResultBuilder]: For program point L6051(lines 6051 6055) no Hoare annotation was computed. [2021-11-13 01:31:58,968 INFO L854 garLoopResultBuilder]: At program point L7009(lines 7008 7010) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,968 INFO L858 garLoopResultBuilder]: For program point L6184(line 6184) no Hoare annotation was computed. [2021-11-13 01:31:58,969 INFO L858 garLoopResultBuilder]: For program point L6052-1(line 6052) no Hoare annotation was computed. [2021-11-13 01:31:58,969 INFO L854 garLoopResultBuilder]: At program point L6052(line 6052) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,969 INFO L854 garLoopResultBuilder]: At program point L5953(lines 5948 5955) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,969 INFO L861 garLoopResultBuilder]: At program point L6977(lines 6962 6983) the Hoare annotation is: true [2021-11-13 01:31:58,969 INFO L858 garLoopResultBuilder]: For program point L6185(lines 6185 6200) no Hoare annotation was computed. [2021-11-13 01:31:58,969 INFO L854 garLoopResultBuilder]: At program point L6978(line 6978) the Hoare annotation is: false [2021-11-13 01:31:58,969 INFO L858 garLoopResultBuilder]: For program point L6945-1(line 6945) no Hoare annotation was computed. [2021-11-13 01:31:58,969 INFO L854 garLoopResultBuilder]: At program point L6945(line 6945) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,969 INFO L854 garLoopResultBuilder]: At program point L6318(lines 6307 6320) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,970 INFO L854 garLoopResultBuilder]: At program point L6087(line 6087) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,970 INFO L858 garLoopResultBuilder]: For program point L6087-1(line 6087) no Hoare annotation was computed. [2021-11-13 01:31:58,970 INFO L854 garLoopResultBuilder]: At program point L6153(lines 6002 6228) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,970 INFO L858 garLoopResultBuilder]: For program point L6120(line 6120) no Hoare annotation was computed. [2021-11-13 01:31:58,970 INFO L858 garLoopResultBuilder]: For program point L6946(lines 6946 6952) no Hoare annotation was computed. [2021-11-13 01:31:58,970 INFO L858 garLoopResultBuilder]: For program point L6187(lines 6187 6197) no Hoare annotation was computed. [2021-11-13 01:31:58,970 INFO L858 garLoopResultBuilder]: For program point L6220(line 6220) no Hoare annotation was computed. [2021-11-13 01:31:58,970 INFO L861 garLoopResultBuilder]: At program point L6121(line 6121) the Hoare annotation is: true [2021-11-13 01:31:58,972 INFO L858 garLoopResultBuilder]: For program point L6947-1(line 6947) no Hoare annotation was computed. [2021-11-13 01:31:58,972 INFO L854 garLoopResultBuilder]: At program point L6947(line 6947) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,972 INFO L854 garLoopResultBuilder]: At program point L7013(lines 7012 7014) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv2 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) (= ~ldv_mutex_lock~0 (_ bv1 32)) (= |ULTIMATE.start_m5632_recover_~r~0#1| (_ bv0 32)) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) [2021-11-13 01:31:58,972 INFO L861 garLoopResultBuilder]: At program point L6221(line 6221) the Hoare annotation is: true [2021-11-13 01:31:58,972 INFO L858 garLoopResultBuilder]: For program point L6188(line 6188) no Hoare annotation was computed. [2021-11-13 01:31:58,972 INFO L854 garLoopResultBuilder]: At program point L5858(lines 5843 5860) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,972 INFO L858 garLoopResultBuilder]: For program point L6189(lines 6189 6193) no Hoare annotation was computed. [2021-11-13 01:31:58,973 INFO L858 garLoopResultBuilder]: For program point L6057(line 6057) no Hoare annotation was computed. [2021-11-13 01:31:58,973 INFO L854 garLoopResultBuilder]: At program point L6223(lines 6002 6228) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,973 INFO L854 garLoopResultBuilder]: At program point L6190(line 6190) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,973 INFO L861 garLoopResultBuilder]: At program point L6058(line 6058) the Hoare annotation is: true [2021-11-13 01:31:58,974 INFO L858 garLoopResultBuilder]: For program point L6190-1(line 6190) no Hoare annotation was computed. [2021-11-13 01:31:58,976 INFO L854 garLoopResultBuilder]: At program point L6950(line 6950) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,976 INFO L858 garLoopResultBuilder]: For program point L6917-1(lines 6917 6920) no Hoare annotation was computed. [2021-11-13 01:31:58,976 INFO L858 garLoopResultBuilder]: For program point L6950-1(line 6950) no Hoare annotation was computed. [2021-11-13 01:31:58,976 INFO L858 garLoopResultBuilder]: For program point L6917(lines 6917 6920) no Hoare annotation was computed. [2021-11-13 01:31:58,976 INFO L854 garLoopResultBuilder]: At program point L6918(line 6918) the Hoare annotation is: false [2021-11-13 01:31:58,977 INFO L854 garLoopResultBuilder]: At program point L6951(lines 6940 6954) the Hoare annotation is: (let ((.cse0 (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32))) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32))) (.cse2 (= ~ldv_mutex_lock~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ~ldv_mutex_udev~0 (_ bv2 32)) .cse2 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) (and .cse0 .cse1 (= ~ldv_mutex_udev~0 (_ bv1 32)) .cse2 (not (bvsge |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32)))))) [2021-11-13 01:31:58,977 INFO L854 garLoopResultBuilder]: At program point L5960(lines 5956 5962) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,977 INFO L858 garLoopResultBuilder]: For program point L6159(line 6159) no Hoare annotation was computed. [2021-11-13 01:31:58,977 INFO L858 garLoopResultBuilder]: For program point L6027(lines 6027 6222) no Hoare annotation was computed. [2021-11-13 01:31:58,977 INFO L858 garLoopResultBuilder]: For program point L6093(line 6093) no Hoare annotation was computed. [2021-11-13 01:31:58,977 INFO L854 garLoopResultBuilder]: At program point L6985(lines 6984 6986) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv2 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) (= ~ldv_mutex_lock~0 (_ bv1 32)) (= |ULTIMATE.start_m5632_recover_~r~0#1| (_ bv0 32)) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) [2021-11-13 01:31:58,977 INFO L858 garLoopResultBuilder]: For program point L6127(line 6127) no Hoare annotation was computed. [2021-11-13 01:31:58,977 INFO L858 garLoopResultBuilder]: For program point L6094(lines 6094 6098) no Hoare annotation was computed. [2021-11-13 01:31:58,977 INFO L861 garLoopResultBuilder]: At program point L6160(line 6160) the Hoare annotation is: true [2021-11-13 01:31:58,978 INFO L858 garLoopResultBuilder]: For program point L6028(line 6028) no Hoare annotation was computed. [2021-11-13 01:31:58,978 INFO L854 garLoopResultBuilder]: At program point L6326(lines 6321 6328) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,978 INFO L861 garLoopResultBuilder]: At program point L6227(lines 5979 6229) the Hoare annotation is: true [2021-11-13 01:31:58,978 INFO L858 garLoopResultBuilder]: For program point L6128(lines 6128 6164) no Hoare annotation was computed. [2021-11-13 01:31:58,978 INFO L858 garLoopResultBuilder]: For program point L6029(lines 6029 6044) no Hoare annotation was computed. [2021-11-13 01:31:58,978 INFO L854 garLoopResultBuilder]: At program point L7020(lines 7019 7021) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,978 INFO L858 garLoopResultBuilder]: For program point L6195(line 6195) no Hoare annotation was computed. [2021-11-13 01:31:58,978 INFO L854 garLoopResultBuilder]: At program point L6922(lines 6914 6924) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32)) (= |ULTIMATE.start_m5632_recover_~r~0#1| (_ bv0 32)) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) [2021-11-13 01:31:58,978 INFO L854 garLoopResultBuilder]: At program point L6988(lines 6987 6989) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,978 INFO L858 garLoopResultBuilder]: For program point L6130(lines 6130 6161) no Hoare annotation was computed. [2021-11-13 01:31:58,979 INFO L861 garLoopResultBuilder]: At program point L6196(line 6196) the Hoare annotation is: true [2021-11-13 01:31:58,979 INFO L858 garLoopResultBuilder]: For program point L6031(lines 6031 6041) no Hoare annotation was computed. [2021-11-13 01:31:58,979 INFO L858 garLoopResultBuilder]: For program point L6064(line 6064) no Hoare annotation was computed. [2021-11-13 01:31:58,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L854 garLoopResultBuilder]: At program point L6296(lines 6291 6298) the Hoare annotation is: (let ((.cse0 (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32))) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32))) (.cse2 (= ~ldv_mutex_lock~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ~ldv_mutex_udev~0 (_ bv2 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) .cse2 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) (and .cse0 .cse1 (= ~ldv_mutex_udev~0 (_ bv1 32)) .cse2 (not (bvsge |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1| (_ bv0 32))) (not (bvsge |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32)))))) [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6131(line 6131) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6065(lines 6065 6125) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6032(line 6032) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6132(lines 6132 6137) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6033(lines 6033 6037) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L854 garLoopResultBuilder]: At program point L7024(lines 7023 7025) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6166(line 6166) no Hoare annotation was computed. [2021-11-13 01:31:58,981 INFO L858 garLoopResultBuilder]: For program point L6067(lines 6067 6122) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6100(line 6100) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L854 garLoopResultBuilder]: At program point L6959(lines 6955 6961) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32)) (= |ULTIMATE.start_m5632_recover_~r~0#1| (_ bv0 32)) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) [2021-11-13 01:31:58,982 INFO L854 garLoopResultBuilder]: At program point L6992(lines 6991 6993) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6167(lines 6167 6182) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6101(lines 6101 6108) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6068(line 6068) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L854 garLoopResultBuilder]: At program point L6003(line 6003) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6003-1(line 6003) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6069(lines 6069 6077) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,982 INFO L858 garLoopResultBuilder]: For program point L6202(line 6202) no Hoare annotation was computed. [2021-11-13 01:31:58,983 INFO L858 garLoopResultBuilder]: For program point L6103(lines 6103 6106) no Hoare annotation was computed. [2021-11-13 01:31:58,983 INFO L858 garLoopResultBuilder]: For program point L6169(lines 6169 6179) no Hoare annotation was computed. [2021-11-13 01:31:58,983 INFO L854 garLoopResultBuilder]: At program point L7028(lines 7027 7029) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,983 INFO L854 garLoopResultBuilder]: At program point L5773(lines 5768 5775) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,983 INFO L858 garLoopResultBuilder]: For program point L6203(lines 6203 6218) no Hoare annotation was computed. [2021-11-13 01:31:58,983 INFO L858 garLoopResultBuilder]: For program point L6170(line 6170) no Hoare annotation was computed. [2021-11-13 01:31:58,983 INFO L858 garLoopResultBuilder]: For program point L6071(lines 6071 6075) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L854 garLoopResultBuilder]: At program point L6005(line 6005) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6005-1(line 6005) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6171(lines 6171 6175) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6039(line 6039) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L854 garLoopResultBuilder]: At program point L6304(lines 6299 6306) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) |ULTIMATE.start_ldv_usb_lock_device_for_reset_12_#res#1|) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32)) (= |ULTIMATE.start_m5632_recover_~r~0#1| (_ bv0 32)) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| (_ bv0 32))) [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6139(line 6139) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6172-1(line 6172) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L858 garLoopResultBuilder]: For program point L6205(lines 6205 6215) no Hoare annotation was computed. [2021-11-13 01:31:58,984 INFO L854 garLoopResultBuilder]: At program point L6172(line 6172) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,985 INFO L854 garLoopResultBuilder]: At program point L6007(line 6007) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6007-1(line 6007) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L854 garLoopResultBuilder]: At program point L5974(line 5974) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,985 INFO L861 garLoopResultBuilder]: At program point L6040(line 6040) the Hoare annotation is: true [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L5974-1(line 5974) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6965-1(lines 6964 6982) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6965(lines 6965 6968) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6206(line 6206) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6140(lines 6140 6157) no Hoare annotation was computed. [2021-11-13 01:31:58,985 INFO L854 garLoopResultBuilder]: At program point L6966(line 6966) the Hoare annotation is: false [2021-11-13 01:31:58,985 INFO L858 garLoopResultBuilder]: For program point L6207(lines 6207 6211) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L854 garLoopResultBuilder]: At program point L6009(line 6009) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L6009-1(line 6009) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L854 garLoopResultBuilder]: At program point L5976(lines 5970 5978) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L6208-1(line 6208) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L6142(lines 6142 6150) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L854 garLoopResultBuilder]: At program point L6208(line 6208) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L6142-2(lines 6140 6156) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L6110(line 6110) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,986 INFO L854 garLoopResultBuilder]: At program point L6011(line 6011) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,987 INFO L854 garLoopResultBuilder]: At program point L-1-2(line -1) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6011-1(line 6011) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L-1-3(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6969(lines 6964 6982) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6111(lines 6111 6118) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6177(line 6177) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L854 garLoopResultBuilder]: At program point L6970(line 6970) the Hoare annotation is: false [2021-11-13 01:31:58,987 INFO L861 garLoopResultBuilder]: At program point L6178(line 6178) the Hoare annotation is: true [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6079(line 6079) no Hoare annotation was computed. [2021-11-13 01:31:58,987 INFO L858 garLoopResultBuilder]: For program point L6046(line 6046) no Hoare annotation was computed. [2021-11-13 01:31:58,988 INFO L854 garLoopResultBuilder]: At program point L6013(line 6013) the Hoare annotation is: (and (= ~ldv_mutex_mutex_of_device~0 (_ bv1 32)) (= ~ldv_mutex_i_mutex_of_inode~0 (_ bv1 32)) (= (_ bv0 32) ~ldv_state_variable_6~0) (= ~ldv_mutex_udev~0 (_ bv1 32)) (= ~ldv_mutex_lock~0 (_ bv1 32))) [2021-11-13 01:31:58,988 INFO L858 garLoopResultBuilder]: For program point L6013-1(line 6013) no Hoare annotation was computed. [2021-11-13 01:31:58,988 INFO L861 garLoopResultBuilder]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2021-11-13 01:31:58,989 INFO L858 garLoopResultBuilder]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,989 INFO L858 garLoopResultBuilder]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2021-11-13 01:31:58,989 INFO L861 garLoopResultBuilder]: At program point always_connectedENTRY(lines 5837 5842) the Hoare annotation is: true [2021-11-13 01:31:58,989 INFO L858 garLoopResultBuilder]: For program point always_connectedFINAL(lines 5837 5842) no Hoare annotation was computed. [2021-11-13 01:31:58,989 INFO L858 garLoopResultBuilder]: For program point always_connectedEXIT(lines 5837 5842) no Hoare annotation was computed. [2021-11-13 01:31:58,989 INFO L861 garLoopResultBuilder]: At program point ldv_undef_int_negativeENTRY(lines 6336 6349) the Hoare annotation is: true [2021-11-13 01:31:58,989 INFO L858 garLoopResultBuilder]: For program point L6343-1(lines 6343 6346) no Hoare annotation was computed. [2021-11-13 01:31:58,990 INFO L858 garLoopResultBuilder]: For program point L6343(lines 6343 6346) no Hoare annotation was computed. [2021-11-13 01:31:58,990 INFO L861 garLoopResultBuilder]: At program point L6344(line 6344) the Hoare annotation is: true [2021-11-13 01:31:58,990 INFO L858 garLoopResultBuilder]: For program point ldv_undef_int_negativeFINAL(lines 6336 6349) no Hoare annotation was computed. [2021-11-13 01:31:58,990 INFO L858 garLoopResultBuilder]: For program point L6341-1(line 6341) no Hoare annotation was computed. [2021-11-13 01:31:58,991 INFO L858 garLoopResultBuilder]: For program point ldv_undef_int_negativeEXIT(lines 6336 6349) no Hoare annotation was computed. [2021-11-13 01:31:58,991 INFO L861 garLoopResultBuilder]: At program point L6341(line 6341) the Hoare annotation is: true [2021-11-13 01:31:58,994 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:58,995 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:31:59,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:31:59 BoogieIcfgContainer [2021-11-13 01:31:59,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:31:59,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:31:59,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:31:59,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:31:59,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:05" (3/4) ... [2021-11-13 01:31:59,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 01:31:59,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure usbnet_disconnect [2021-11-13 01:31:59,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2021-11-13 01:31:59,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_mutex_lock_udev [2021-11-13 01:31:59,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_stop [2021-11-13 01:31:59,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_init_zalloc [2021-11-13 01:31:59,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-13 01:31:59,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int [2021-11-13 01:31:59,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2021-11-13 01:31:59,049 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure always_connected [2021-11-13 01:31:59,049 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int_negative [2021-11-13 01:31:59,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2021-11-13 01:31:59,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-13 01:31:59,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 01:31:59,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 01:31:59,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 01:31:59,129 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 [2021-11-13 01:31:59,129 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 [2021-11-13 01:31:59,130 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && ldv_mutex_lock == 1bv32) && \result == 0bv32) || ((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && !~bvsge32(\result, 0bv32)) [2021-11-13 01:31:59,130 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 [2021-11-13 01:31:59,131 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && \result == 0bv32) || (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && !~bvsge32(\result, 0bv32)) && !~bvsge32(\result, 0bv32)) [2021-11-13 01:31:59,132 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 [2021-11-13 01:31:59,133 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 [2021-11-13 01:31:59,666 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 01:31:59,666 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:31:59,667 INFO L158 Benchmark]: Toolchain (without parser) took 59748.21ms. Allocated memory was 56.6MB in the beginning and 255.9MB in the end (delta: 199.2MB). Free memory was 26.7MB in the beginning and 146.3MB in the end (delta: -119.6MB). Peak memory consumption was 175.4MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,668 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:31:59,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2024.59ms. Allocated memory was 56.6MB in the beginning and 102.8MB in the end (delta: 46.1MB). Free memory was 26.5MB in the beginning and 41.2MB in the end (delta: -14.8MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.83ms. Allocated memory is still 102.8MB. Free memory was 41.2MB in the beginning and 33.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,669 INFO L158 Benchmark]: Boogie Preprocessor took 198.05ms. Allocated memory is still 102.8MB. Free memory was 33.3MB in the beginning and 39.3MB in the end (delta: -6.0MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,670 INFO L158 Benchmark]: RCFGBuilder took 3630.16ms. Allocated memory was 102.8MB in the beginning and 207.6MB in the end (delta: 104.9MB). Free memory was 39.3MB in the beginning and 106.5MB in the end (delta: -67.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,671 INFO L158 Benchmark]: TraceAbstraction took 53112.34ms. Allocated memory was 207.6MB in the beginning and 255.9MB in the end (delta: 48.2MB). Free memory was 105.5MB in the beginning and 156.8MB in the end (delta: -51.3MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,671 INFO L158 Benchmark]: Witness Printer took 631.94ms. Allocated memory is still 255.9MB. Free memory was 156.8MB in the beginning and 146.3MB in the end (delta: 10.5MB). Peak memory consumption was 103.9MB. Max. memory is 16.1GB. [2021-11-13 01:31:59,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 56.6MB. Free memory was 37.5MB in the beginning and 37.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2024.59ms. Allocated memory was 56.6MB in the beginning and 102.8MB in the end (delta: 46.1MB). Free memory was 26.5MB in the beginning and 41.2MB in the end (delta: -14.8MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.83ms. Allocated memory is still 102.8MB. Free memory was 41.2MB in the beginning and 33.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 198.05ms. Allocated memory is still 102.8MB. Free memory was 33.3MB in the beginning and 39.3MB in the end (delta: -6.0MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3630.16ms. Allocated memory was 102.8MB in the beginning and 207.6MB in the end (delta: 104.9MB). Free memory was 39.3MB in the beginning and 106.5MB in the end (delta: -67.2MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 53112.34ms. Allocated memory was 207.6MB in the beginning and 255.9MB in the end (delta: 48.2MB). Free memory was 105.5MB in the beginning and 156.8MB in the end (delta: -51.3MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. * Witness Printer took 631.94ms. Allocated memory is still 255.9MB. Free memory was 156.8MB in the beginning and 146.3MB in the end (delta: 10.5MB). Peak memory consumption was 103.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 187 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.0s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2093 SdHoareTripleChecker+Valid, 2422.71ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2086 mSDsluCounter, 6953 SdHoareTripleChecker+Invalid, 2314.09ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4071 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 2882 mSDtfsCounter, 92 mSolverCounterSat, 53.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5525 GetRequests, 5451 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 354 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 70 LocationsWithAnnotation, 413 PreInvPairs, 515 NumberOfFragments, 706 HoareAnnotationTreeSize, 413 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 70 FomulaSimplificationsInter, 3467 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 21.1s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 2779 NumberOfCodeBlocks, 2779 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 5518 ConstructedInterpolants, 0 QuantifiedInterpolants, 7119 SizeOfPredicates, 54 NumberOfNonLiveVariables, 28212 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 40 InterpolantComputations, 19 PerfectInterpolantSequences, 9923/9998 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7008]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 7019]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 7027]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 5970]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6914]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 - InvariantResult [Line: 6299]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 - InvariantResult [Line: 6955]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == \result) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 - InvariantResult [Line: 5956]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6987]: Loop Invariant Derived loop invariant: (((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == ldv_state_variable_6) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 5979]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5792]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6940]: Loop Invariant Derived loop invariant: ((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && ldv_mutex_lock == 1bv32) && \result == 0bv32) || ((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && !~bvsge32(\result, 0bv32)) - InvariantResult [Line: 6984]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 - InvariantResult [Line: 7023]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 7004]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 5843]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6321]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 5768]: Loop Invariant Derived loop invariant: (((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == ldv_state_variable_6) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6962]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6307]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: (((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && 0bv32 == ldv_state_variable_6) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 6291]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && \result == 0bv32) || (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32) && !~bvsge32(\result, 0bv32)) && !~bvsge32(\result, 0bv32)) - InvariantResult [Line: 6991]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 - InvariantResult [Line: 7012]: Loop Invariant Derived loop invariant: (((((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 2bv32) && 0bv32 == \result) && ldv_mutex_lock == 1bv32) && r == 0bv32) && \result == 0bv32 - InvariantResult [Line: 5948]: Loop Invariant Derived loop invariant: ((ldv_mutex_mutex_of_device == 1bv32 && ldv_mutex_i_mutex_of_inode == 1bv32) && ldv_mutex_udev == 1bv32) && ldv_mutex_lock == 1bv32 RESULT: Ultimate proved your program to be correct! [2021-11-13 01:31:59,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8602a1-55bd-4cf5-9cb2-68eff3e3c2f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE