./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.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_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/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_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/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_4cd52bbc-3551-4453-af32-dfc125d5939b/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 fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:17,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:17,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:17,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:17,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:17,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:17,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:17,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:17,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:17,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:17,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:17,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:17,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:17,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:17,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:17,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:17,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:17,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:17,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:17,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:17,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:17,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:17,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:17,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:17,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:17,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:17,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:17,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:17,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:17,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:17,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:17,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:17,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:17,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:17,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:17,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:17,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:17,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:17,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:17,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:17,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:17,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:43:17,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:17,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:17,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:17,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:17,954 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:17,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:17,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:17,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:17,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:17,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:17,956 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:17,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:17,957 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:17,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:17,957 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:17,957 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:17,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:17,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:17,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:17,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:17,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:17,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:17,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:17,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:17,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:17,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:17,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:17,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:17,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:17,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:17,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:17,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:17,961 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:17,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:17,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:17,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:17,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:17,962 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_4cd52bbc-3551-4453-af32-dfc125d5939b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 [2021-11-12 23:43:18,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:18,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:18,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:18,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:18,252 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:18,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-12 23:43:18,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/f69451e51/89f1e94041d34089860f80531213e8f7/FLAGbbe1aee03 [2021-11-12 23:43:19,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:19,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-12 23:43:19,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/f69451e51/89f1e94041d34089860f80531213e8f7/FLAGbbe1aee03 [2021-11-12 23:43:19,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/f69451e51/89f1e94041d34089860f80531213e8f7 [2021-11-12 23:43:19,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:19,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:19,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:19,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:19,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:19,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:19" (1/1) ... [2021-11-12 23:43:19,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3e3971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:19, skipping insertion in model container [2021-11-12 23:43:19,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:19" (1/1) ... [2021-11-12 23:43:19,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:19,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:21,747 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:43:21,764 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:43:21,766 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:43:22,763 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-12 23:43:22,766 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-12 23:43:22,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:22,861 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) [2021-11-12 23:43:22,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@206768a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:22, skipping insertion in model container [2021-11-12 23:43:22,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:22,862 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:43:22,865 INFO L158 Benchmark]: Toolchain (without parser) took 3210.76ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 53.9MB in the beginning and 63.7MB in the end (delta: -9.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-11-12 23:43:22,865 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory was 49.8MB in the beginning and 49.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:22,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3207.55ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 53.6MB in the beginning and 63.7MB in the end (delta: -10.0MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-11-12 23:43:22,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory was 49.8MB in the beginning and 49.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3207.55ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 53.6MB in the beginning and 63.7MB in the end (delta: -10.0MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6414]: 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_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/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_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/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_4cd52bbc-3551-4453-af32-dfc125d5939b/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 fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:25,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:25,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:25,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:25,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:25,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:25,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:25,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:25,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:25,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:25,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:25,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:25,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:25,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:25,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:25,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:25,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:25,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:25,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:25,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:25,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:25,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:25,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:25,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:25,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:25,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:25,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:25,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:25,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:25,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:25,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:25,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:25,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:25,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:25,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:25,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:25,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:25,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:25,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:25,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:25,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:25,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:43:25,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:25,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:25,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:25,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:25,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:25,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:25,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:25,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:25,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:25,386 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:25,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:25,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:25,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:25,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:25,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:25,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:25,390 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:43:25,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:43:25,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:25,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:25,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:25,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:25,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:43:25,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:25,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:25,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:25,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:25,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:25,393 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:43:25,393 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:25,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:25,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:25,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:25,394 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_4cd52bbc-3551-4453-af32-dfc125d5939b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe434f0112be26c4714543d386b3350bd2a9bdce09b4b83ffbdf4c55da2983b7 [2021-11-12 23:43:25,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:25,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:25,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:25,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:25,782 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:25,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-12 23:43:25,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/3f6f27d3e/1bfb15e6bdf94d75ab23753d8a5b8c45/FLAG9dc3e7acf [2021-11-12 23:43:26,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:26,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-12 23:43:26,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/3f6f27d3e/1bfb15e6bdf94d75ab23753d8a5b8c45/FLAG9dc3e7acf [2021-11-12 23:43:27,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/data/3f6f27d3e/1bfb15e6bdf94d75ab23753d8a5b8c45 [2021-11-12 23:43:27,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:27,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:27,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:27,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:27,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:27,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:27" (1/1) ... [2021-11-12 23:43:27,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56eb3679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:27, skipping insertion in model container [2021-11-12 23:43:27,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:27" (1/1) ... [2021-11-12 23:43:27,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:27,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:30,578 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-12 23:43:30,581 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-12 23:43:30,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:30,685 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:43:30,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:31,234 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-12 23:43:31,240 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-12 23:43:31,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:31,275 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:31,721 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339084,339097] [2021-11-12 23:43:31,721 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_4cd52bbc-3551-4453-af32-dfc125d5939b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i[339229,339242] [2021-11-12 23:43:31,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:31,954 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:43:31,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31 WrapperNode [2021-11-12 23:43:31,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:31,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:31,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:43:31,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:43:31,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:32,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:43:32,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:43:32,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:43:32,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:43:32,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:43:32,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:43:32,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:43:32,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (1/1) ... [2021-11-12 23:43:32,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:32,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:32,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:43:32,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:43:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_resume [2021-11-12 23:43:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_resume [2021-11-12 23:43:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:43:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:43:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:43:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_write_reg [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_write_reg [2021-11-12 23:43:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_86 [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_86 [2021-11-12 23:43:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:43:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:43:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-12 23:43:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-12 23:43:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read8 [2021-11-12 23:43:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read8 [2021-11-12 23:43:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:43:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:43:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tlan_priv [2021-11-12 23:43:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tlan_priv [2021-11-12 23:43:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_read_and_clear_stats [2021-11-12 23:43:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_read_and_clear_stats [2021-11-12 23:43:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_sync [2021-11-12 23:43:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_sync [2021-11-12 23:43:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:43:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:43:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:43:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:43:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:43:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:43:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:43:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:43:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:43:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:43:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:43:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:43:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_lists [2021-11-12 23:43:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_lists [2021-11-12 23:43:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_close [2021-11-12 23:43:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_close [2021-11-12 23:43:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:43:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:43:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_print [2021-11-12 23:43:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_print [2021-11-12 23:43:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-12 23:43:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-12 23:43:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tlan_priv [2021-11-12 23:43:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tlan_priv [2021-11-12 23:43:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver [2021-11-12 23:43:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver [2021-11-12 23:43:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_probe1 [2021-11-12 23:43:32,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_probe1 [2021-11-12 23:43:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:43:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:43:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:43:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:43:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:43:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:43:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:43:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:43:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:43:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:43:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:43:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:43:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_timer [2021-11-12 23:43:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_timer [2021-11-12 23:43:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_timer [2021-11-12 23:43:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_timer [2021-11-12 23:43:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-12 23:43:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-12 23:43:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_stop [2021-11-12 23:43:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_stop [2021-11-12 23:43:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:43:32,784 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:43:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_88 [2021-11-12 23:43:32,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_88 [2021-11-12 23:43:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:43:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:43:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_remove_one [2021-11-12 23:43:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_remove_one [2021-11-12 23:43:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_get_skb [2021-11-12 23:43:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_get_skb [2021-11-12 23:43:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_byte [2021-11-12 23:43:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_byte [2021-11-12 23:43:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:43:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-11-12 23:43:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-11-12 23:43:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_poll [2021-11-12 23:43:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_poll [2021-11-12 23:43:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-12 23:43:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-12 23:43:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:43:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:43:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:43:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:43:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:43:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:43:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:43:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:43:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_free_lists [2021-11-12 23:43:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_free_lists [2021-11-12 23:43:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:43:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:43:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:43:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:43:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:43:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:43:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:43:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:43:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:43:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:43:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2021-11-12 23:43:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2021-11-12 23:43:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_store_skb [2021-11-12 23:43:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_store_skb [2021-11-12 23:43:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_tx_timeout [2021-11-12 23:43:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_tx_timeout [2021-11-12 23:43:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:43:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:43:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:43:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:43:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2021-11-12 23:43:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2021-11-12 23:43:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:43:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_up [2021-11-12 23:43:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_up [2021-11-12 23:43:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:43:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:43:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:43:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:43:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:43:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2021-11-12 23:43:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2021-11-12 23:43:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_handle_interrupt [2021-11-12 23:43:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_handle_interrupt [2021-11-12 23:43:32,807 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_start [2021-11-12 23:43:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_start [2021-11-12 23:43:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:43:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:43:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_finish_auto_neg [2021-11-12 23:43:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_finish_auto_neg [2021-11-12 23:43:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:43:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:43:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:43:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:43:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-12 23:43:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-12 23:43:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_start_link [2021-11-12 23:43:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_start_link [2021-11-12 23:43:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:43:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_multicast_list [2021-11-12 23:43:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_multicast_list [2021-11-12 23:43:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:43:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:43:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:43:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-12 23:43:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-12 23:43:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-12 23:43:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-12 23:43:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:43:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:43:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:43:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:43:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:43:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_print_list [2021-11-12 23:43:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_print_list [2021-11-12 23:43:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write16 [2021-11-12 23:43:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write16 [2021-11-12 23:43:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-12 23:43:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-12 23:43:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:43:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:43:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-12 23:43:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-12 23:43:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:43:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:43:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-12 23:43:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-12 23:43:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_finish_reset [2021-11-12 23:43:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_finish_reset [2021-11-12 23:43:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write32 [2021-11-12 23:43:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write32 [2021-11-12 23:43:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:43:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:43:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:43:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:43:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_set_mac [2021-11-12 23:43:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_set_mac [2021-11-12 23:43:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-12 23:43:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-12 23:43:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_ee_send_start [2021-11-12 23:43:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_ee_send_start [2021-11-12 23:43:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_read32 [2021-11-12 23:43:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_read32 [2021-11-12 23:43:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_dio_write8 [2021-11-12 23:43:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_dio_write8 [2021-11-12 23:43:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:43:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:43:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_power_down [2021-11-12 23:43:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_power_down [2021-11-12 23:43:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-12 23:43:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-12 23:43:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_reset_adapter [2021-11-12 23:43:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_reset_adapter [2021-11-12 23:43:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_send_data [2021-11-12 23:43:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_send_data [2021-11-12 23:43:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_phy_reset [2021-11-12 23:43:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_phy_reset [2021-11-12 23:43:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_mii_read_reg [2021-11-12 23:43:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_mii_read_reg [2021-11-12 23:43:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:43:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:43:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure tlan_open [2021-11-12 23:43:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure tlan_open [2021-11-12 23:43:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:43:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:43:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-12 23:43:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-12 23:43:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-12 23:43:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-12 23:43:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-12 23:43:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-12 23:43:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-12 23:43:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-12 23:43:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-12 23:43:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:43:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:43:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-12 23:43:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-12 23:43:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-12 23:43:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-12 23:43:46,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:44:20,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6972: assume 1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1); [2021-11-12 23:44:20,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6972: assume !(1bv32 != ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___3~1#1)); [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7005: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet385#1; [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7005: assume !(16bv32 == ~debug~0); [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974-1: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet387#1; [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6974-1: assume !(16bv32 == ~debug~0); [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: assume 0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset); [2021-11-12 23:44:20,031 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: assume !(0bv64 == ~bvadd64(tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset)); [2021-11-12 23:44:20,033 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979: assume 16bv32 == ~debug~0;havoc tlan_eisa_probe_#t~nondet381#1; [2021-11-12 23:44:20,033 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979: assume !(16bv32 == ~debug~0); [2021-11-12 23:44:20,033 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7045: assume ~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2021-11-12 23:44:20,033 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7045: assume !~bvsle64(tlan_eisa_probe_~ioaddr~0#1, 36863bv64); [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6979-2: SUMMARY for call tlan_eisa_probe_#t~ret383#1 := inb(~bvadd32(3264bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7047: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7047: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6950: SUMMARY for call tlan_eisa_probe_#t~ret378#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6950-1: tlan_eisa_probe_~tmp___2~2#1 := tlan_eisa_probe_#t~ret378#1;havoc tlan_eisa_probe_#t~ret378#1; [2021-11-12 23:44:20,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7017: SUMMARY for call tlan_eisa_probe_#t~ret384#1 := tlan_probe1(0bv64, 0bv64, tlan_eisa_probe_~ioaddr~0#1, tlan_eisa_probe_~irq~0#1, 12bv32, 0bv64, 0bv64); srcloc: null [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6952: assume 4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1); [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6952: assume !(4366bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~tmp___2~2#1)); [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6986: tlan_eisa_probe_~tmp___4~0#1 := tlan_eisa_probe_#t~ret383#1;havoc tlan_eisa_probe_#t~ret383#1; [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6954: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6921-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0); [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6921-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-12 23:44:20,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6923-1: tlan_eisa_probe_~tmp~35#1 := tlan_eisa_probe_#t~ret369#1;havoc tlan_eisa_probe_#t~ret369#1;havoc tlan_eisa_probe_#t~nondet370#1; [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6923: SUMMARY for call tlan_eisa_probe_#t~ret369#1 := inw(~bvadd32(3200bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6989: assume 16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6989: assume !(16bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6990: tlan_eisa_probe_~irq~0#1 := 5bv32; [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7024: tlan_eisa_probe_~rc~2#1 := tlan_eisa_probe_#t~ret384#1;havoc tlan_eisa_probe_#t~ret384#1; [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6960-1: tlan_eisa_probe_~device_id~1#1 := tlan_eisa_probe_#t~ret379#1;havoc tlan_eisa_probe_#t~ret379#1; [2021-11-12 23:44:20,036 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6960: SUMMARY for call tlan_eisa_probe_#t~ret379#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6993: assume 32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6993: assume !(32bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6994: tlan_eisa_probe_~irq~0#1 := 9bv32; [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6928-1: assume 0bv32 != ~bvand32(16bv32, ~debug~0);havoc tlan_eisa_probe_#t~nondet375#1; [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6928-1: assume !(0bv32 != ~bvand32(16bv32, ~debug~0)); [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6962: assume 8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1); [2021-11-12 23:44:20,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6962: assume !(8433bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1) && 16625bv32 != ~zero_extendFrom16To32(tlan_eisa_probe_~device_id~1#1)); [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6930: SUMMARY for call tlan_eisa_probe_#t~ret372#1 := inw(~bvadd32(3202bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6930-1: tlan_eisa_probe_~tmp___0~12#1 := tlan_eisa_probe_#t~ret372#1;havoc tlan_eisa_probe_#t~ret372#1;havoc tlan_eisa_probe_#t~nondet373#1; [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6964: SUMMARY for call __release_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64); srcloc: null [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6997: assume 64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6997: assume !(64bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6998: tlan_eisa_probe_~irq~0#1 := 10bv32; [2021-11-12 23:44:20,038 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6935-1: call tlan_eisa_probe_#t~ret377#1.base, tlan_eisa_probe_#t~ret377#1.offset := __request_region(~#ioport_resource~0.base, ~#ioport_resource~0.offset, tlan_eisa_probe_~ioaddr~0#1, 16bv64, ~#tlan_signature~0.base, ~#tlan_signature~0.offset, 0bv32);tlan_eisa_probe_~tmp___1~5#1.base, tlan_eisa_probe_~tmp___1~5#1.offset := tlan_eisa_probe_#t~ret377#1.base, tlan_eisa_probe_#t~ret377#1.offset;havoc tlan_eisa_probe_#t~ret377#1.base, tlan_eisa_probe_#t~ret377#1.offset; [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7001: assume 128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1); [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7001: assume !(128bv32 == ~zero_extendFrom8To32(tlan_eisa_probe_~tmp___4~0#1)); [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7002: tlan_eisa_probe_~irq~0#1 := 11bv32; [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6970: SUMMARY for call tlan_eisa_probe_#t~ret380#1 := inb(~bvadd32(3204bv32, tlan_eisa_probe_~ioaddr~0#1[32:0])); srcloc: null [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7036-1: tlan_eisa_probe_~ioaddr~0#1 := ~bvadd64(4096bv64, tlan_eisa_probe_~ioaddr~0#1); [2021-11-12 23:44:20,039 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L6970-1: tlan_eisa_probe_~tmp___3~1#1 := tlan_eisa_probe_#t~ret380#1;havoc tlan_eisa_probe_#t~ret380#1; [2021-11-12 23:44:20,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:44:20,143 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:44:20,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:20 BoogieIcfgContainer [2021-11-12 23:44:20,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:44:20,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:44:20,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:44:20,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:44:20,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:27" (1/3) ... [2021-11-12 23:44:20,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adce638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:20, skipping insertion in model container [2021-11-12 23:44:20,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:31" (2/3) ... [2021-11-12 23:44:20,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adce638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:20, skipping insertion in model container [2021-11-12 23:44:20,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:20" (3/3) ... [2021-11-12 23:44:20,157 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-ti-tlan.cil.i [2021-11-12 23:44:20,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:44:20,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:44:20,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:44:20,226 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 [2021-11-12 23:44:20,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:44:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 1996 states, 1285 states have (on average 1.2568093385214008) internal successors, (1615), 1339 states have internal predecessors, (1615), 602 states have call successors, (602), 108 states have call predecessors, (602), 107 states have return successors, (598), 580 states have call predecessors, (598), 598 states have call successors, (598) [2021-11-12 23:44:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:44:20,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:20,321 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:20,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1038281529, now seen corresponding path program 1 times [2021-11-12 23:44:20,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:20,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620994932] [2021-11-12 23:44:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:20,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:20,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:44:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:25,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 23:44:26,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 23:44:27,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:27,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620994932] [2021-11-12 23:44:27,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620994932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:27,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:27,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:44:27,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862611907] [2021-11-12 23:44:27,532 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:27,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:44:27,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:44:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:27,581 INFO L87 Difference]: Start difference. First operand has 1996 states, 1285 states have (on average 1.2568093385214008) internal successors, (1615), 1339 states have internal predecessors, (1615), 602 states have call successors, (602), 108 states have call predecessors, (602), 107 states have return successors, (598), 580 states have call predecessors, (598), 598 states have call successors, (598) Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:44:29,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:34,448 INFO L93 Difference]: Finished difference Result 6721 states and 9768 transitions. [2021-11-12 23:44:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:44:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 172 [2021-11-12 23:44:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:34,525 INFO L225 Difference]: With dead ends: 6721 [2021-11-12 23:44:34,525 INFO L226 Difference]: Without dead ends: 3550 [2021-11-12 23:44:34,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:34,587 INFO L933 BasicCegarLoop]: 4244 mSDtfsCounter, 3820 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5920.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.84ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6325.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:34,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3820 Valid, 10344 Invalid, 856 Unknown, 0 Unchecked, 56.84ms Time], IncrementalHoareTripleChecker [33 Valid, 822 Invalid, 1 Unknown, 0 Unchecked, 6325.17ms Time] [2021-11-12 23:44:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2021-11-12 23:44:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3533. [2021-11-12 23:44:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2298 states have (on average 1.2389033942558747) internal successors, (2847), 2394 states have internal predecessors, (2847), 1033 states have call successors, (1033), 201 states have call predecessors, (1033), 201 states have return successors, (1042), 999 states have call predecessors, (1042), 1033 states have call successors, (1042) [2021-11-12 23:44:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4922 transitions. [2021-11-12 23:44:34,997 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4922 transitions. Word has length 172 [2021-11-12 23:44:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:34,998 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4922 transitions. [2021-11-12 23:44:34,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:44:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4922 transitions. [2021-11-12 23:44:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:44:35,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:35,013 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:35,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:44:35,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:35,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1102762759, now seen corresponding path program 1 times [2021-11-12 23:44:35,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:35,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158477746] [2021-11-12 23:44:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:35,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:35,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:35,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:44:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:40,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 23:44:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-12 23:44:42,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-12 23:44:45,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:45,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158477746] [2021-11-12 23:44:45,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158477746] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:45,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:45,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:44:45,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632466005] [2021-11-12 23:44:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:45,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:44:45,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:44:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:44:45,018 INFO L87 Difference]: Start difference. First operand 3533 states and 4922 transitions. Second operand has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:44:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:47,104 INFO L93 Difference]: Finished difference Result 7055 states and 9828 transitions. [2021-11-12 23:44:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:44:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) Word has length 172 [2021-11-12 23:44:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:47,155 INFO L225 Difference]: With dead ends: 7055 [2021-11-12 23:44:47,156 INFO L226 Difference]: Without dead ends: 3537 [2021-11-12 23:44:47,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:44:47,187 INFO L933 BasicCegarLoop]: 2639 mSDtfsCounter, 72 mSDsluCounter, 18332 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1230.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 20971 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1312.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:47,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 20971 Invalid, 303 Unknown, 0 Unchecked, 65.17ms Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1312.32ms Time] [2021-11-12 23:44:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-11-12 23:44:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-11-12 23:44:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2298 states have (on average 1.238468233246301) internal successors, (2846), 2393 states have internal predecessors, (2846), 1033 states have call successors, (1033), 201 states have call predecessors, (1033), 201 states have return successors, (1042), 999 states have call predecessors, (1042), 1033 states have call successors, (1042) [2021-11-12 23:44:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4921 transitions. [2021-11-12 23:44:47,411 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4921 transitions. Word has length 172 [2021-11-12 23:44:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4921 transitions. [2021-11-12 23:44:47,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:44:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4921 transitions. [2021-11-12 23:44:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 23:44:47,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:47,419 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:47,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:47,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:47,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash -102246426, now seen corresponding path program 1 times [2021-11-12 23:44:47,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:47,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453816815] [2021-11-12 23:44:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:47,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:47,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:47,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:44:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:53,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:44:53,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-12 23:44:54,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-12 23:44:55,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:55,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453816815] [2021-11-12 23:44:55,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453816815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:55,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:55,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 17 [2021-11-12 23:44:55,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306020853] [2021-11-12 23:44:55,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:55,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 23:44:55,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 23:44:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:44:55,454 INFO L87 Difference]: Start difference. First operand 3533 states and 4921 transitions. Second operand has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-12 23:44:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:58,838 INFO L93 Difference]: Finished difference Result 7121 states and 9917 transitions. [2021-11-12 23:44:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-12 23:44:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) Word has length 178 [2021-11-12 23:44:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:58,881 INFO L225 Difference]: With dead ends: 7121 [2021-11-12 23:44:58,881 INFO L226 Difference]: Without dead ends: 3605 [2021-11-12 23:44:58,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-11-12 23:44:58,918 INFO L933 BasicCegarLoop]: 2653 mSDtfsCounter, 49 mSDsluCounter, 34371 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2010.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 37024 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.48ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2123.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:58,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 37024 Invalid, 607 Unknown, 0 Unchecked, 70.48ms Time], IncrementalHoareTripleChecker [43 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2123.52ms Time] [2021-11-12 23:44:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-12 23:44:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3555. [2021-11-12 23:44:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2314 states have (on average 1.236819360414866) internal successors, (2862), 2409 states have internal predecessors, (2862), 1037 states have call successors, (1037), 201 states have call predecessors, (1037), 203 states have return successors, (1048), 1005 states have call predecessors, (1048), 1037 states have call successors, (1048) [2021-11-12 23:44:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4947 transitions. [2021-11-12 23:44:59,263 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4947 transitions. Word has length 178 [2021-11-12 23:44:59,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:59,265 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 4947 transitions. [2021-11-12 23:44:59,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 6 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-12 23:44:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4947 transitions. [2021-11-12 23:44:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-12 23:44:59,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:59,271 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:59,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:59,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:59,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:59,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash 985438442, now seen corresponding path program 1 times [2021-11-12 23:44:59,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:59,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373552043] [2021-11-12 23:44:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:59,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:59,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:59,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:59,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:45:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:04,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:45:04,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 83 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 23:45:05,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-12 23:45:07,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:07,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373552043] [2021-11-12 23:45:07,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373552043] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:07,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1493255586] [2021-11-12 23:45:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:07,438 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:07,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:45:07,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:45:07,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 23:45:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:09,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:09,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:45:10,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-12 23:45:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1493255586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:10,566 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:45:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11, 11] total 14 [2021-11-12 23:45:10,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671629051] [2021-11-12 23:45:10,567 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:45:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:45:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:45:10,568 INFO L87 Difference]: Start difference. First operand 3555 states and 4947 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:45:12,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:12,941 INFO L93 Difference]: Finished difference Result 7141 states and 9947 transitions. [2021-11-12 23:45:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:45:12,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 180 [2021-11-12 23:45:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:12,982 INFO L225 Difference]: With dead ends: 7141 [2021-11-12 23:45:12,982 INFO L226 Difference]: Without dead ends: 3605 [2021-11-12 23:45:13,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:45:13,008 INFO L933 BasicCegarLoop]: 2669 mSDtfsCounter, 34 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2170.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2216.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:13,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 5304 Invalid, 24 Unknown, 0 Unchecked, 10.81ms Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2216.55ms Time] [2021-11-12 23:45:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-12 23:45:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3597. [2021-11-12 23:45:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2344 states have (on average 1.235494880546075) internal successors, (2896), 2439 states have internal predecessors, (2896), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 203 states have return successors, (1060), 1017 states have call predecessors, (1060), 1049 states have call successors, (1060) [2021-11-12 23:45:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5005 transitions. [2021-11-12 23:45:13,232 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5005 transitions. Word has length 180 [2021-11-12 23:45:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:13,234 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 5005 transitions. [2021-11-12 23:45:13,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:45:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5005 transitions. [2021-11-12 23:45:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 23:45:13,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:13,242 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:13,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:13,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:13,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:13,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1892290033, now seen corresponding path program 1 times [2021-11-12 23:45:13,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:13,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542723678] [2021-11-12 23:45:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:13,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:13,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:13,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:13,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:45:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:18,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:45:18,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-12 23:45:20,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-12 23:45:21,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:21,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542723678] [2021-11-12 23:45:21,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542723678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:21,109 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:21,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 15] imperfect sequences [] total 18 [2021-11-12 23:45:21,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066053308] [2021-11-12 23:45:21,110 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:21,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:45:21,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:21,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:45:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:45:21,111 INFO L87 Difference]: Start difference. First operand 3597 states and 5005 transitions. Second operand has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2021-11-12 23:45:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:24,495 INFO L93 Difference]: Finished difference Result 7386 states and 10296 transitions. [2021-11-12 23:45:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:45:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) Word has length 186 [2021-11-12 23:45:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:24,534 INFO L225 Difference]: With dead ends: 7386 [2021-11-12 23:45:24,534 INFO L226 Difference]: Without dead ends: 3806 [2021-11-12 23:45:24,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2021-11-12 23:45:24,554 INFO L933 BasicCegarLoop]: 2729 mSDtfsCounter, 182 mSDsluCounter, 38002 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1992.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 40731 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.27ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2134.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:24,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 40731 Invalid, 671 Unknown, 0 Unchecked, 57.27ms Time], IncrementalHoareTripleChecker [50 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2134.10ms Time] [2021-11-12 23:45:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-11-12 23:45:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3601. [2021-11-12 23:45:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2352941176470589) internal successors, (2898), 2443 states have internal predecessors, (2898), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:45:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5011 transitions. [2021-11-12 23:45:24,765 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5011 transitions. Word has length 186 [2021-11-12 23:45:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:24,766 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5011 transitions. [2021-11-12 23:45:24,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 7 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2021-11-12 23:45:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5011 transitions. [2021-11-12 23:45:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-12 23:45:24,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:24,773 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:24,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:24,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,991 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 699960433, now seen corresponding path program 1 times [2021-11-12 23:45:24,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:24,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913532738] [2021-11-12 23:45:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:24,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:24,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:25,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:45:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:30,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:45:30,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:45:32,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:45:33,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:33,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913532738] [2021-11-12 23:45:33,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913532738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:33,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469260591] [2021-11-12 23:45:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:33,299 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:45:33,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:45:33,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:45:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:45:37,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:45:38,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469260591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:38,363 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:45:38,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:45:38,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477666633] [2021-11-12 23:45:38,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:38,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:38,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:45:38,365 INFO L87 Difference]: Start difference. First operand 3601 states and 5011 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:45:40,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:45,762 INFO L93 Difference]: Finished difference Result 7183 states and 10046 transitions. [2021-11-12 23:45:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:45:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 246 [2021-11-12 23:45:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:45,800 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:45:45,800 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:45:45,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:45:45,822 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 3948 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6582.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.75ms SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7157.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:45,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 4201 Invalid, 2241 Unknown, 0 Unchecked, 26.75ms Time], IncrementalHoareTripleChecker [1106 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7157.01ms Time] [2021-11-12 23:45:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:45:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:45:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2344416027280478) internal successors, (2896), 2443 states have internal predecessors, (2896), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:45:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5009 transitions. [2021-11-12 23:45:46,036 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5009 transitions. Word has length 246 [2021-11-12 23:45:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:46,037 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5009 transitions. [2021-11-12 23:45:46,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:45:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5009 transitions. [2021-11-12 23:45:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-12 23:45:46,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:46,044 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:46,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:46,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-12 23:45:46,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:46,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1089311808, now seen corresponding path program 1 times [2021-11-12 23:45:46,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:46,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361443974] [2021-11-12 23:45:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:46,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:46,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:46,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:46,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:45:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:52,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:45:52,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:45:53,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:45:54,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:54,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361443974] [2021-11-12 23:45:54,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361443974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:45:54,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [637225458] [2021-11-12 23:45:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:54,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:45:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:45:54,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:45:54,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:45:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:56,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:56,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:45:58,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:45:59,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [637225458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:59,902 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:45:59,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:45:59,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109095822] [2021-11-12 23:45:59,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:59,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:59,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:45:59,904 INFO L87 Difference]: Start difference. First operand 3601 states and 5009 transitions. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:02,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:07,338 INFO L93 Difference]: Finished difference Result 7183 states and 10042 transitions. [2021-11-12 23:46:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:07,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 247 [2021-11-12 23:46:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:07,372 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:46:07,372 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:46:07,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:07,391 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 3945 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6690.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.17ms SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7197.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:07,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 4199 Invalid, 2241 Unknown, 0 Unchecked, 20.17ms Time], IncrementalHoareTripleChecker [1106 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7197.39ms Time] [2021-11-12 23:46:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:46:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:46:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2335890878090368) internal successors, (2894), 2443 states have internal predecessors, (2894), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:46:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5007 transitions. [2021-11-12 23:46:07,614 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5007 transitions. Word has length 247 [2021-11-12 23:46:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:07,617 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5007 transitions. [2021-11-12 23:46:07,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5007 transitions. [2021-11-12 23:46:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-12 23:46:07,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:07,624 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:07,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:07,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:08,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:08,043 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash -607659827, now seen corresponding path program 1 times [2021-11-12 23:46:08,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:08,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368593614] [2021-11-12 23:46:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:08,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:08,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:08,048 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:08,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:46:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:13,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:46:13,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:46:15,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:46:16,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:16,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368593614] [2021-11-12 23:46:16,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368593614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:16,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [819392332] [2021-11-12 23:46:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:16,406 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:46:16,407 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:46:16,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:46:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:18,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:18,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:46:20,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:46:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [819392332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:21,575 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:46:21,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:46:21,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337771718] [2021-11-12 23:46:21,576 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:21,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:46:21,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:46:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:21,577 INFO L87 Difference]: Start difference. First operand 3601 states and 5007 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:23,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:28,757 INFO L93 Difference]: Finished difference Result 7183 states and 10038 transitions. [2021-11-12 23:46:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:28,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 248 [2021-11-12 23:46:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:28,792 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:46:28,792 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:46:28,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:28,812 INFO L933 BasicCegarLoop]: 2665 mSDtfsCounter, 2525 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6466.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 4197 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.59ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6931.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:28,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 4197 Invalid, 1170 Unknown, 0 Unchecked, 17.59ms Time], IncrementalHoareTripleChecker [35 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6931.94ms Time] [2021-11-12 23:46:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:46:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:46:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2327365728900255) internal successors, (2892), 2443 states have internal predecessors, (2892), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:46:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5005 transitions. [2021-11-12 23:46:29,117 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5005 transitions. Word has length 248 [2021-11-12 23:46:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:29,117 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5005 transitions. [2021-11-12 23:46:29,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5005 transitions. [2021-11-12 23:46:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-12 23:46:29,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:29,124 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:29,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:29,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-12 23:46:29,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:29,539 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1553166300, now seen corresponding path program 1 times [2021-11-12 23:46:29,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:29,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833844791] [2021-11-12 23:46:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:29,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:29,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:29,543 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:29,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:46:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:46:35,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:46:36,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:46:37,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:37,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833844791] [2021-11-12 23:46:37,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833844791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:37,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085301878] [2021-11-12 23:46:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:37,913 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:37,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:46:37,937 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:46:37,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:46:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:40,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:46:40,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:46:41,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:46:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2085301878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:43,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:46:43,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:46:43,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45923434] [2021-11-12 23:46:43,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:46:43,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:46:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:43,087 INFO L87 Difference]: Start difference. First operand 3601 states and 5005 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:45,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:50,404 INFO L93 Difference]: Finished difference Result 7183 states and 10034 transitions. [2021-11-12 23:46:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:46:50,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 249 [2021-11-12 23:46:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:50,430 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:46:50,430 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:46:50,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:46:50,448 INFO L933 BasicCegarLoop]: 2664 mSDtfsCounter, 2524 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6572.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 4195 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.96ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7038.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:50,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 4195 Invalid, 1170 Unknown, 0 Unchecked, 16.96ms Time], IncrementalHoareTripleChecker [35 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7038.92ms Time] [2021-11-12 23:46:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:46:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:46:50,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2318840579710144) internal successors, (2890), 2443 states have internal predecessors, (2890), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:46:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5003 transitions. [2021-11-12 23:46:50,687 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5003 transitions. Word has length 249 [2021-11-12 23:46:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:50,688 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5003 transitions. [2021-11-12 23:46:50,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:46:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5003 transitions. [2021-11-12 23:46:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-12 23:46:50,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:50,694 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:50,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:50,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:51,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:51,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -66183895, now seen corresponding path program 1 times [2021-11-12 23:46:51,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:51,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088927828] [2021-11-12 23:46:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:51,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:51,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:51,117 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:51,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:46:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:46:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:46:58,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:46:59,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:59,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088927828] [2021-11-12 23:46:59,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088927828] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:46:59,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938975031] [2021-11-12 23:46:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:59,472 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:46:59,473 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:46:59,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:47:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:01,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:01,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:03,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:04,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [938975031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:04,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:04,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:47:04,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023947916] [2021-11-12 23:47:04,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:04,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:04,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:47:04,450 INFO L87 Difference]: Start difference. First operand 3601 states and 5003 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:47:06,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:11,571 INFO L93 Difference]: Finished difference Result 7183 states and 10030 transitions. [2021-11-12 23:47:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:11,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 250 [2021-11-12 23:47:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:11,596 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:47:11,596 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:47:11,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:47:11,616 INFO L933 BasicCegarLoop]: 2663 mSDtfsCounter, 3936 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6383.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.65ms SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6865.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:11,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3936 Valid, 4193 Invalid, 2241 Unknown, 0 Unchecked, 17.65ms Time], IncrementalHoareTripleChecker [1106 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6865.14ms Time] [2021-11-12 23:47:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:47:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:47:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2310315430520034) internal successors, (2888), 2443 states have internal predecessors, (2888), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:47:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5001 transitions. [2021-11-12 23:47:11,868 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5001 transitions. Word has length 250 [2021-11-12 23:47:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:11,870 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5001 transitions. [2021-11-12 23:47:11,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:47:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5001 transitions. [2021-11-12 23:47:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-12 23:47:11,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:11,876 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:11,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 23:47:12,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:12,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:12,293 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:12,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:12,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1388084216, now seen corresponding path program 1 times [2021-11-12 23:47:12,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:12,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100911486] [2021-11-12 23:47:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:12,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:12,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:12,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:47:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:17,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:47:17,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:47:19,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:47:20,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:20,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100911486] [2021-11-12 23:47:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100911486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:20,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1469397559] [2021-11-12 23:47:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:20,544 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:20,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:20,545 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:20,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:47:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:22,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:24,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:25,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1469397559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:25,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:25,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:47:25,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37398062] [2021-11-12 23:47:25,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:25,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:25,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:47:25,439 INFO L87 Difference]: Start difference. First operand 3601 states and 5001 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:47:27,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:32,685 INFO L93 Difference]: Finished difference Result 7183 states and 10026 transitions. [2021-11-12 23:47:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 251 [2021-11-12 23:47:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:32,709 INFO L225 Difference]: With dead ends: 7183 [2021-11-12 23:47:32,709 INFO L226 Difference]: Without dead ends: 3601 [2021-11-12 23:47:32,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:47:32,731 INFO L933 BasicCegarLoop]: 2662 mSDtfsCounter, 3933 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6480.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.83ms SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6969.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:32,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3933 Valid, 4191 Invalid, 2241 Unknown, 0 Unchecked, 17.83ms Time], IncrementalHoareTripleChecker [1106 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6969.64ms Time] [2021-11-12 23:47:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-12 23:47:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2021-11-12 23:47:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2346 states have (on average 1.2301790281329923) internal successors, (2886), 2443 states have internal predecessors, (2886), 1049 states have call successors, (1049), 201 states have call predecessors, (1049), 205 states have return successors, (1064), 1017 states have call predecessors, (1064), 1049 states have call successors, (1064) [2021-11-12 23:47:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4999 transitions. [2021-11-12 23:47:33,119 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4999 transitions. Word has length 251 [2021-11-12 23:47:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:33,120 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 4999 transitions. [2021-11-12 23:47:33,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 3 states have call successors, (68), 3 states have call predecessors, (68), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-12 23:47:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4999 transitions. [2021-11-12 23:47:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-12 23:47:33,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:33,127 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:33,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:33,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:33,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:33,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash -659727995, now seen corresponding path program 1 times [2021-11-12 23:47:33,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:33,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928730940] [2021-11-12 23:47:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:33,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:33,551 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:33,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:47:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:39,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:47:39,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:47:40,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:47:41,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:41,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928730940] [2021-11-12 23:47:41,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928730940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:41,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846613510] [2021-11-12 23:47:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:41,845 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:41,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:41,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:47:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:43,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-12 23:47:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846613510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:45,306 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:45,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 11] total 16 [2021-11-12 23:47:45,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336796275] [2021-11-12 23:47:45,307 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:45,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:47:45,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:47:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:47:45,308 INFO L87 Difference]: Start difference. First operand 3601 states and 4999 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:47:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:45,971 INFO L93 Difference]: Finished difference Result 7341 states and 10219 transitions. [2021-11-12 23:47:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:47:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 252 [2021-11-12 23:47:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:46,080 INFO L225 Difference]: With dead ends: 7341 [2021-11-12 23:47:46,081 INFO L226 Difference]: Without dead ends: 3759 [2021-11-12 23:47:46,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 990 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:47:46,096 INFO L933 BasicCegarLoop]: 2770 mSDtfsCounter, 163 mSDsluCounter, 8099 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 10869 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 358.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:46,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 10869 Invalid, 111 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [23 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 358.75ms Time] [2021-11-12 23:47:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-11-12 23:47:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3617. [2021-11-12 23:47:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 2358 states have (on average 1.2307039864291773) internal successors, (2902), 2457 states have internal predecessors, (2902), 1053 states have call successors, (1053), 201 states have call predecessors, (1053), 205 states have return successors, (1068), 1021 states have call predecessors, (1068), 1053 states have call successors, (1068) [2021-11-12 23:47:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 5023 transitions. [2021-11-12 23:47:46,369 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 5023 transitions. Word has length 252 [2021-11-12 23:47:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:46,369 INFO L470 AbstractCegarLoop]: Abstraction has 3617 states and 5023 transitions. [2021-11-12 23:47:46,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-12 23:47:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 5023 transitions. [2021-11-12 23:47:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-12 23:47:46,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:46,374 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:46,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:46,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-12 23:47:46,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:46,795 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1593161124, now seen corresponding path program 1 times [2021-11-12 23:47:46,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:46,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233679952] [2021-11-12 23:47:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:46,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:46,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:46,801 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:46,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:47:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:52,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:47:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:47:54,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:47:55,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:55,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233679952] [2021-11-12 23:47:55,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233679952] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:47:55,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [614093144] [2021-11-12 23:47:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:55,769 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:47:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:47:55,770 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:47:55,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:47:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:57,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:47:57,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-12 23:47:58,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:47:59,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [614093144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:59,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:47:59,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11, 11] total 13 [2021-11-12 23:47:59,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251167123] [2021-11-12 23:47:59,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:59,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:47:59,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:47:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:47:59,132 INFO L87 Difference]: Start difference. First operand 3617 states and 5023 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-12 23:47:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:59,485 INFO L93 Difference]: Finished difference Result 7599 states and 10605 transitions. [2021-11-12 23:47:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:59,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 262 [2021-11-12 23:47:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:59,514 INFO L225 Difference]: With dead ends: 7599 [2021-11-12 23:47:59,514 INFO L226 Difference]: Without dead ends: 4001 [2021-11-12 23:47:59,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:47:59,534 INFO L933 BasicCegarLoop]: 2756 mSDtfsCounter, 205 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 5419 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:59,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 5419 Invalid, 6 Unknown, 0 Unchecked, 7.83ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 37.17ms Time] [2021-11-12 23:47:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-11-12 23:47:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3619. [2021-11-12 23:47:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 2360 states have (on average 1.2309322033898304) internal successors, (2905), 2459 states have internal predecessors, (2905), 1053 states have call successors, (1053), 201 states have call predecessors, (1053), 205 states have return successors, (1068), 1021 states have call predecessors, (1068), 1053 states have call successors, (1068) [2021-11-12 23:47:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5026 transitions. [2021-11-12 23:47:59,826 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5026 transitions. Word has length 262 [2021-11-12 23:47:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:59,826 INFO L470 AbstractCegarLoop]: Abstraction has 3619 states and 5026 transitions. [2021-11-12 23:47:59,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-12 23:47:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5026 transitions. [2021-11-12 23:47:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-12 23:47:59,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:59,831 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:59,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:00,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:00,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:00,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1621661414, now seen corresponding path program 1 times [2021-11-12 23:48:00,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:00,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988641496] [2021-11-12 23:48:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:00,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:00,255 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:00,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:48:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:05,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:48:05,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:48:07,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:48:08,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:08,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988641496] [2021-11-12 23:48:08,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988641496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:48:08,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143284522] [2021-11-12 23:48:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:08,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:08,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:48:08,613 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:48:08,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-12 23:48:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:10,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:48:10,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:48:12,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:48:13,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1143284522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:13,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:48:13,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:48:13,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464531552] [2021-11-12 23:48:13,770 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:13,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:13,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:48:13,772 INFO L87 Difference]: Start difference. First operand 3619 states and 5026 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:48:16,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:48:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:29,168 INFO L93 Difference]: Finished difference Result 10249 states and 14659 transitions. [2021-11-12 23:48:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:48:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 262 [2021-11-12 23:48:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:29,238 INFO L225 Difference]: With dead ends: 10249 [2021-11-12 23:48:29,239 INFO L226 Difference]: Without dead ends: 6649 [2021-11-12 23:48:29,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:48:29,267 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 4802 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13859.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.31ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14821.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:29,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 9180 Invalid, 3446 Unknown, 0 Unchecked, 46.31ms Time], IncrementalHoareTripleChecker [41 Valid, 3404 Invalid, 1 Unknown, 0 Unchecked, 14821.77ms Time] [2021-11-12 23:48:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2021-11-12 23:48:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6639. [2021-11-12 23:48:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2254402224281742) internal successors, (5289), 4512 states have internal predecessors, (5289), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:48:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9549 transitions. [2021-11-12 23:48:29,958 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9549 transitions. Word has length 262 [2021-11-12 23:48:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:29,959 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9549 transitions. [2021-11-12 23:48:29,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:48:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9549 transitions. [2021-11-12 23:48:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-12 23:48:29,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:29,964 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:30,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:30,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:30,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:30,383 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 641954591, now seen corresponding path program 1 times [2021-11-12 23:48:30,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:30,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232773721] [2021-11-12 23:48:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:30,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:30,390 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:30,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:48:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:36,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:48:36,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:48:37,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:48:39,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:39,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232773721] [2021-11-12 23:48:39,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232773721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:48:39,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716652072] [2021-11-12 23:48:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:39,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:48:39,285 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:48:39,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:48:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:41,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:48:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:48:43,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:48:45,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [716652072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:45,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:48:45,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:48:45,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871029320] [2021-11-12 23:48:45,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:45,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:48:45,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:48:45,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:48:45,101 INFO L87 Difference]: Start difference. First operand 6639 states and 9549 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:48:47,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:48:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:52,771 INFO L93 Difference]: Finished difference Result 13259 states and 19167 transitions. [2021-11-12 23:48:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:48:52,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 263 [2021-11-12 23:48:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:52,828 INFO L225 Difference]: With dead ends: 13259 [2021-11-12 23:48:52,828 INFO L226 Difference]: Without dead ends: 6639 [2021-11-12 23:48:52,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:48:52,872 INFO L933 BasicCegarLoop]: 2661 mSDtfsCounter, 2513 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6692.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.30ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7179.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:52,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2513 Valid, 4189 Invalid, 1171 Unknown, 0 Unchecked, 18.30ms Time], IncrementalHoareTripleChecker [36 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7179.65ms Time] [2021-11-12 23:48:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-12 23:48:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-12 23:48:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2249768303985171) internal successors, (5287), 4512 states have internal predecessors, (5287), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:48:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9547 transitions. [2021-11-12 23:48:53,585 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9547 transitions. Word has length 263 [2021-11-12 23:48:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:53,586 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9547 transitions. [2021-11-12 23:48:53,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:48:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9547 transitions. [2021-11-12 23:48:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-12 23:48:53,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:53,591 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:53,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-12 23:48:54,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:54,015 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2085876682, now seen corresponding path program 1 times [2021-11-12 23:48:54,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:54,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180991751] [2021-11-12 23:48:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:54,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:54,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:54,022 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:54,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:48:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:59,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:48:59,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:49:00,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:49:02,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:02,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180991751] [2021-11-12 23:49:02,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180991751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:02,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1914713012] [2021-11-12 23:49:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:02,198 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:02,204 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:02,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-12 23:49:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:04,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:04,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:06,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:07,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1914713012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:07,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:07,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:49:07,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683148425] [2021-11-12 23:49:07,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:07,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:07,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:07,240 INFO L87 Difference]: Start difference. First operand 6639 states and 9547 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:49:09,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:49:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:14,310 INFO L93 Difference]: Finished difference Result 13259 states and 19163 transitions. [2021-11-12 23:49:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 264 [2021-11-12 23:49:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:14,354 INFO L225 Difference]: With dead ends: 13259 [2021-11-12 23:49:14,354 INFO L226 Difference]: Without dead ends: 6639 [2021-11-12 23:49:14,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:14,388 INFO L933 BasicCegarLoop]: 2660 mSDtfsCounter, 2512 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6080.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.91ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6499.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:14,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 4187 Invalid, 1171 Unknown, 0 Unchecked, 15.91ms Time], IncrementalHoareTripleChecker [36 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6499.53ms Time] [2021-11-12 23:49:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-12 23:49:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-12 23:49:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.22451343836886) internal successors, (5285), 4512 states have internal predecessors, (5285), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:49:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9545 transitions. [2021-11-12 23:49:15,009 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9545 transitions. Word has length 264 [2021-11-12 23:49:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:15,009 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9545 transitions. [2021-11-12 23:49:15,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:49:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9545 transitions. [2021-11-12 23:49:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-12 23:49:15,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:15,015 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:15,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:15,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:15,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:49:15,431 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:49:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash -634783621, now seen corresponding path program 1 times [2021-11-12 23:49:15,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:15,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410772412] [2021-11-12 23:49:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:15,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:15,438 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:15,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 23:49:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:21,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:49:21,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:49:22,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:49:24,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:24,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410772412] [2021-11-12 23:49:24,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410772412] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:24,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456601577] [2021-11-12 23:49:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:24,432 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:24,432 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:24,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-12 23:49:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:26,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:28,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:29,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456601577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:29,826 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:29,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:49:29,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362679629] [2021-11-12 23:49:29,826 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:29,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:29,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:29,828 INFO L87 Difference]: Start difference. First operand 6639 states and 9545 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:49:32,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:49:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:38,131 INFO L93 Difference]: Finished difference Result 13259 states and 19159 transitions. [2021-11-12 23:49:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 265 [2021-11-12 23:49:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:38,175 INFO L225 Difference]: With dead ends: 13259 [2021-11-12 23:49:38,176 INFO L226 Difference]: Without dead ends: 6639 [2021-11-12 23:49:38,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1043 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:38,221 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 3907 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7068.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3907 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.38ms SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7632.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:38,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3907 Valid, 4185 Invalid, 2240 Unknown, 0 Unchecked, 22.38ms Time], IncrementalHoareTripleChecker [1105 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7632.14ms Time] [2021-11-12 23:49:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-12 23:49:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-12 23:49:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.224050046339203) internal successors, (5283), 4512 states have internal predecessors, (5283), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:49:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9543 transitions. [2021-11-12 23:49:38,883 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9543 transitions. Word has length 265 [2021-11-12 23:49:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:38,883 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9543 transitions. [2021-11-12 23:49:38,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:49:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9543 transitions. [2021-11-12 23:49:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-12 23:49:38,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:38,889 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:38,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:39,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-11-12 23:49:39,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:39,315 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:49:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1513944914, now seen corresponding path program 1 times [2021-11-12 23:49:39,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:39,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152815307] [2021-11-12 23:49:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:39,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:39,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:39,322 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:39,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 23:49:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:45,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:49:45,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:49:46,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:49:47,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:47,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152815307] [2021-11-12 23:49:47,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152815307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:47,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1866228375] [2021-11-12 23:49:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:47,871 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:47,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:47,872 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:47,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-12 23:49:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:49,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:49:49,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:51,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:49:52,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1866228375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:52,834 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:52,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:49:52,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890503948] [2021-11-12 23:49:52,835 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:52,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:52,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:52,836 INFO L87 Difference]: Start difference. First operand 6639 states and 9543 transitions. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:49:55,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:49:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:59,931 INFO L93 Difference]: Finished difference Result 13259 states and 19155 transitions. [2021-11-12 23:49:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:59,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 266 [2021-11-12 23:49:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:59,962 INFO L225 Difference]: With dead ends: 13259 [2021-11-12 23:49:59,962 INFO L226 Difference]: Without dead ends: 6639 [2021-11-12 23:49:59,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:59,990 INFO L933 BasicCegarLoop]: 2658 mSDtfsCounter, 2510 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6154.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.71ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6578.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:59,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2510 Valid, 4183 Invalid, 1171 Unknown, 0 Unchecked, 15.71ms Time], IncrementalHoareTripleChecker [36 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 6578.08ms Time] [2021-11-12 23:49:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-12 23:50:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-12 23:50:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.223586654309546) internal successors, (5281), 4512 states have internal predecessors, (5281), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:50:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9541 transitions. [2021-11-12 23:50:00,627 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9541 transitions. Word has length 266 [2021-11-12 23:50:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:00,627 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9541 transitions. [2021-11-12 23:50:00,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:50:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9541 transitions. [2021-11-12 23:50:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-12 23:50:00,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:00,631 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:00,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:00,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:01,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:01,047 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:50:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -480430633, now seen corresponding path program 1 times [2021-11-12 23:50:01,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:01,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106309719] [2021-11-12 23:50:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:01,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:01,051 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:01,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-12 23:50:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:06,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:50:06,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:50:08,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:50:09,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:09,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106309719] [2021-11-12 23:50:09,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106309719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:09,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [28979236] [2021-11-12 23:50:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:09,472 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:09,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:09,472 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:09,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-12 23:50:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:11,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:50:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:50:13,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:50:15,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [28979236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:15,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:50:15,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [11, 11] total 15 [2021-11-12 23:50:15,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249074451] [2021-11-12 23:50:15,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:15,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:50:15,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:50:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:15,135 INFO L87 Difference]: Start difference. First operand 6639 states and 9541 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:50:17,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:50:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:23,508 INFO L93 Difference]: Finished difference Result 13259 states and 19151 transitions. [2021-11-12 23:50:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:50:23,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 267 [2021-11-12 23:50:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:23,546 INFO L225 Difference]: With dead ends: 13259 [2021-11-12 23:50:23,546 INFO L226 Difference]: Without dead ends: 6639 [2021-11-12 23:50:23,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:23,579 INFO L933 BasicCegarLoop]: 2657 mSDtfsCounter, 3901 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 1105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7189.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3901 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.24ms SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7761.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:23,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3901 Valid, 4181 Invalid, 2240 Unknown, 0 Unchecked, 21.24ms Time], IncrementalHoareTripleChecker [1105 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 7761.84ms Time] [2021-11-12 23:50:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-11-12 23:50:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6639. [2021-11-12 23:50:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6639 states, 4316 states have (on average 1.2231232622798889) internal successors, (5279), 4512 states have internal predecessors, (5279), 1927 states have call successors, (1927), 397 states have call predecessors, (1927), 395 states have return successors, (2333), 1837 states have call predecessors, (2333), 1927 states have call successors, (2333) [2021-11-12 23:50:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 9539 transitions. [2021-11-12 23:50:24,371 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 9539 transitions. Word has length 267 [2021-11-12 23:50:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:24,372 INFO L470 AbstractCegarLoop]: Abstraction has 6639 states and 9539 transitions. [2021-11-12 23:50:24,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-12 23:50:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 9539 transitions. [2021-11-12 23:50:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-12 23:50:24,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:24,376 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:24,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2021-11-12 23:50:24,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:24,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:50:24,777 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:50:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -451801482, now seen corresponding path program 1 times [2021-11-12 23:50:24,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:50:24,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102621178] [2021-11-12 23:50:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:24,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:50:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:50:24,782 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:50:24,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-12 23:50:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:50:30,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-12 23:50:31,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-12 23:50:32,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:50:32,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102621178] [2021-11-12 23:50:32,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102621178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:50:32,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822263385] [2021-11-12 23:50:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:32,969 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:50:32,970 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:50:32,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-12 23:50:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:50:35,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:50:35,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-12 23:50:36,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822263385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:36,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:50:36,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [11, 11] total 15 [2021-11-12 23:50:36,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710801795] [2021-11-12 23:50:36,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:36,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:50:36,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:50:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:36,098 INFO L87 Difference]: Start difference. First operand 6639 states and 9539 transitions. Second operand has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:50:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:36,678 INFO L93 Difference]: Finished difference Result 13195 states and 19136 transitions. [2021-11-12 23:50:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:50:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 267 [2021-11-12 23:50:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:36,684 INFO L225 Difference]: With dead ends: 13195 [2021-11-12 23:50:36,684 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:50:36,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:50:36,725 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 9 mSDsluCounter, 7890 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10523 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:36,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 10523 Invalid, 7 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 19.07ms Time] [2021-11-12 23:50:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:50:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:50:36,726 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) [2021-11-12 23:50:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:50:36,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 267 [2021-11-12 23:50:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:36,732 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:50:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 23:50:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:50:36,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:50:36,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:50:36,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:36,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-12 23:50:37,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd52bbc-3551-4453-af32-dfc125d5939b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:50:37,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.