./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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 a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:41:22,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:41:22,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:41:22,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:41:22,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:41:22,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:41:22,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:41:22,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:41:22,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:41:22,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:41:22,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:41:22,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:41:22,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:41:22,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:41:22,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:41:22,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:41:22,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:41:22,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:41:22,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:41:22,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:41:22,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:41:22,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:41:22,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:41:22,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:41:22,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:41:22,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:41:22,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:41:22,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:41:22,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:41:22,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:41:22,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:41:22,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:41:22,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:41:22,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:41:22,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:41:22,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:41:22,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:41:22,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:41:22,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:41:22,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:41:22,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:41:22,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:41:22,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:41:22,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:41:22,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:41:22,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:41:22,417 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:41:22,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:41:22,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:41:22,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:41:22,418 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:41:22,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:41:22,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:41:22,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:41:22,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:41:22,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:41:22,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:41:22,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:41:22,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:41:22,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:41:22,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:41:22,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:41:22,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:41:22,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:41:22,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:41:22,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:41:22,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:41:22,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:41:22,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:41:22,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:41:22,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:22,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:41:22,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:41:22,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:41:22,437 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:41:22,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:41:22,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:41:22,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:41:22,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:41:22,438 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-13 02:41:22,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:41:22,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:41:22,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:41:22,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:41:22,715 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:41:22,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-13 02:41:22,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/57fde89a2/0dcd386adb3942b680f50aa75ebe12fb/FLAG1277842dc [2021-11-13 02:41:23,626 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:41:23,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-13 02:41:23,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/57fde89a2/0dcd386adb3942b680f50aa75ebe12fb/FLAG1277842dc [2021-11-13 02:41:24,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/57fde89a2/0dcd386adb3942b680f50aa75ebe12fb [2021-11-13 02:41:24,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:41:24,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:41:24,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:24,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:41:24,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:41:24,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:24" (1/1) ... [2021-11-13 02:41:24,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e8006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:24, skipping insertion in model container [2021-11-13 02:41:24,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:24" (1/1) ... [2021-11-13 02:41:24,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:41:24,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:41:26,682 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:41:26,685 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:41:26,952 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:41:28,016 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-13 02:41:28,020 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-13 02:41:28,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:28,142 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:41:28,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31253b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:28, skipping insertion in model container [2021-11-13 02:41:28,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:28,144 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:41:28,146 INFO L158 Benchmark]: Toolchain (without parser) took 4004.18ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.7MB in the beginning and 49.3MB in the end (delta: 4.4MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2021-11-13 02:41:28,147 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:28,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4001.46ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.4MB in the beginning and 49.3MB in the end (delta: 4.1MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2021-11-13 02:41:28,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4001.46ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.4MB in the beginning and 49.3MB in the end (delta: 4.1MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5989]: 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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 a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:41:30,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:41:30,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:41:31,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:41:31,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:41:31,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:41:31,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:41:31,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:41:31,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:41:31,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:41:31,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:41:31,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:41:31,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:41:31,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:41:31,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:41:31,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:41:31,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:41:31,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:41:31,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:41:31,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:41:31,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:41:31,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:41:31,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:41:31,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:41:31,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:41:31,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:41:31,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:41:31,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:41:31,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:41:31,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:41:31,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:41:31,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:41:31,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:41:31,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:41:31,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:41:31,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:41:31,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:41:31,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:41:31,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:41:31,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:41:31,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:41:31,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:41:31,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:41:31,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:41:31,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:41:31,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:41:31,224 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:41:31,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:41:31,225 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:41:31,225 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:41:31,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:41:31,226 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:41:31,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:41:31,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:41:31,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:41:31,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:41:31,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:41:31,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:41:31,230 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:41:31,230 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:41:31,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:41:31,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:41:31,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:41:31,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:41:31,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:41:31,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:41:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:31,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:41:31,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:41:31,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:41:31,235 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:41:31,235 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:31,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:41:31,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:41:31,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:41:31,253 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-13 02:41:31,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:41:31,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:41:31,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:41:31,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:41:31,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:41:31,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-13 02:41:31,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/dd2954ff3/6dd720bf32a84a9db2d3322aa67d8ff9/FLAG3d4fd3ec8 [2021-11-13 02:41:33,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:41:33,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-13 02:41:33,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/dd2954ff3/6dd720bf32a84a9db2d3322aa67d8ff9/FLAG3d4fd3ec8 [2021-11-13 02:41:33,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/data/dd2954ff3/6dd720bf32a84a9db2d3322aa67d8ff9 [2021-11-13 02:41:33,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:41:33,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:41:33,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:33,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:41:33,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:41:33,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:33" (1/1) ... [2021-11-13 02:41:33,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694bad28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:33, skipping insertion in model container [2021-11-13 02:41:33,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:33" (1/1) ... [2021-11-13 02:41:33,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:41:33,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:41:37,194 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-13 02:41:37,197 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-13 02:41:37,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:37,291 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:41:37,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:41:37,806 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-13 02:41:37,807 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-13 02:41:37,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:37,903 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:41:38,433 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-13 02:41:38,434 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_c2dea974-37e5-43dd-9ef0-6f323efa2f46/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-13 02:41:38,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:38,794 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:41:38,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38 WrapperNode [2021-11-13 02:41:38,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:38,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:38,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:41:38,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:41:38,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:38,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:39,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:41:39,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:41:39,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:41:39,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:41:39,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:41:39,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:41:39,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:41:39,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (1/1) ... [2021-11-13 02:41:39,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:41:39,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:41:39,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:41:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 02:41:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 02:41:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:41:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:41:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-13 02:41:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-13 02:41:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 02:41:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 02:41:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:41:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:41:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 02:41:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 02:41:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wakeup [2021-11-13 02:41:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wakeup [2021-11-13 02:41:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_status [2021-11-13 02:41:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_status [2021-11-13 02:41:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_set_rx_mode [2021-11-13 02:41:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_set_rx_mode [2021-11-13 02:41:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 02:41:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 02:41:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 02:41:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 02:41:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 02:41:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 02:41:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 02:41:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 02:41:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:41:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 02:41:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 02:41:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 02:41:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 02:41:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 02:41:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 02:41:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 02:41:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 02:41:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-13 02:41:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-13 02:41:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 02:41:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 02:41:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:41:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:41:39,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 02:41:39,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 02:41:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:41:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_clean_tx [2021-11-13 02:41:39,857 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_clean_tx [2021-11-13 02:41:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:41:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:41:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:41:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_stop_runtime [2021-11-13 02:41:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_stop_runtime [2021-11-13 02:41:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 02:41:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 02:41:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_resume [2021-11-13 02:41:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_resume [2021-11-13 02:41:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_rxfree_index [2021-11-13 02:41:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_rxfree_index [2021-11-13 02:41:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_remove_one [2021-11-13 02:41:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_remove_one [2021-11-13 02:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 02:41:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 02:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 02:41:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 02:41:39,865 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 02:41:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 02:41:39,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:41:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:41:39,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 02:41:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 02:41:39,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 02:41:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 02:41:39,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 02:41:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 02:41:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-13 02:41:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-13 02:41:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 02:41:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 02:41:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 02:41:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 02:41:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_close [2021-11-13 02:41:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_close [2021-11-13 02:41:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_tx_timeout [2021-11-13 02:41:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_tx_timeout [2021-11-13 02:41:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_alloc_rx_skb [2021-11-13 02:41:39,871 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_alloc_rx_skb [2021-11-13 02:41:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_issue_command [2021-11-13 02:41:39,872 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_issue_command [2021-11-13 02:41:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:41:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 02:41:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 02:41:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 02:41:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 02:41:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_process_response [2021-11-13 02:41:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_process_response [2021-11-13 02:41:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 02:41:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 02:41:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 02:41:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 02:41:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:41:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:41:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:41:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:41:39,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:41:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:41:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:41:39,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:41:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-13 02:41:39,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-13 02:41:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-13 02:41:39,879 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-13 02:41:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free_tx [2021-11-13 02:41:39,883 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free_tx [2021-11-13 02:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-13 02:41:39,885 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-13 02:41:39,885 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_reset [2021-11-13 02:41:39,885 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_reset [2021-11-13 02:41:39,886 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 02:41:39,887 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 02:41:39,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 02:41:39,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 02:41:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_cmd_index [2021-11-13 02:41:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_cmd_index [2021-11-13 02:41:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 02:41:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 02:41:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_fill_free_ring [2021-11-13 02:41:39,896 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_fill_free_ring [2021-11-13 02:41:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:41:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:41:39,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:41:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-13 02:41:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-13 02:41:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:41:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 02:41:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 02:41:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:41:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:41:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:41:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:41:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:41:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:41:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:41:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 02:41:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 02:41:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 02:41:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 02:41:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:41:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:41:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 02:41:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 02:41:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 02:41:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 02:41:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_interrupt [2021-11-13 02:41:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_interrupt [2021-11-13 02:41:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:41:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 02:41:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 02:41:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:41:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:41:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-13 02:41:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-13 02:41:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:41:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:41:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:41:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:41:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_boot_3XP [2021-11-13 02:41:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_boot_3XP [2021-11-13 02:41:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 02:41:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 02:41:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 02:41:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 02:41:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 02:41:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 02:41:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-13 02:41:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-13 02:41:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-13 02:41:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-13 02:41:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-13 02:41:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-13 02:41:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 02:41:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 02:41:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 02:41:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 02:41:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_free_rx_rings [2021-11-13 02:41:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_free_rx_rings [2021-11-13 02:41:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 02:41:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 02:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_do_get_stats [2021-11-13 02:41:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_do_get_stats [2021-11-13 02:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free [2021-11-13 02:41:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free [2021-11-13 02:41:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_sleep [2021-11-13 02:41:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_sleep [2021-11-13 02:41:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:41:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:41:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:41:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:41:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:41:39,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:41:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2021-11-13 02:41:39,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2021-11-13 02:41:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_init_rings [2021-11-13 02:41:39,911 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_init_rings [2021-11-13 02:41:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 02:41:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 02:41:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_open [2021-11-13 02:41:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_open [2021-11-13 02:41:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 02:41:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 02:41:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_start_runtime [2021-11-13 02:41:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_start_runtime [2021-11-13 02:41:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 02:41:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 02:41:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 02:41:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 02:41:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_index [2021-11-13 02:41:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_index [2021-11-13 02:41:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 02:41:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 02:41:41,387 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:42:40,153 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 02:42:40,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:42:40,371 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:42:40,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:42:40 BoogieIcfgContainer [2021-11-13 02:42:40,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:42:40,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:42:40,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:42:40,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:42:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:41:33" (1/3) ... [2021-11-13 02:42:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e689c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:42:40, skipping insertion in model container [2021-11-13 02:42:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:38" (2/3) ... [2021-11-13 02:42:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e689c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:42:40, skipping insertion in model container [2021-11-13 02:42:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:42:40" (3/3) ... [2021-11-13 02:42:40,384 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-13 02:42:40,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:42:40,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:42:40,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:42:40,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:42:40,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:42:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 1745 states, 1179 states have (on average 1.2790500424088211) internal successors, (1508), 1201 states have internal predecessors, (1508), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) [2021-11-13 02:42:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-13 02:42:40,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:40,542 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:40,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -480123427, now seen corresponding path program 1 times [2021-11-13 02:42:40,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:40,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776258171] [2021-11-13 02:42:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:40,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:40,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:40,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:40,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:42:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:45,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:42:45,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-13 02:42:46,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-13 02:42:47,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:47,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776258171] [2021-11-13 02:42:47,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776258171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:47,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:42:47,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:42:47,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482267512] [2021-11-13 02:42:47,036 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:42:47,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:42:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:42:47,108 INFO L87 Difference]: Start difference. First operand has 1745 states, 1179 states have (on average 1.2790500424088211) internal successors, (1508), 1201 states have internal predecessors, (1508), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 02:42:49,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:42:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:57,106 INFO L93 Difference]: Finished difference Result 5704 states and 8040 transitions. [2021-11-13 02:42:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:42:57,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 197 [2021-11-13 02:42:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:57,197 INFO L225 Difference]: With dead ends: 5704 [2021-11-13 02:42:57,198 INFO L226 Difference]: Without dead ends: 3882 [2021-11-13 02:42:57,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:42:57,244 INFO L933 BasicCegarLoop]: 3061 mSDtfsCounter, 4807 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 568 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8473.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.82ms SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9478.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:57,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 6064 Invalid, 1588 Unknown, 0 Unchecked, 60.82ms Time], IncrementalHoareTripleChecker [568 Valid, 1019 Invalid, 1 Unknown, 0 Unchecked, 9478.41ms Time] [2021-11-13 02:42:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2021-11-13 02:42:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3876. [2021-11-13 02:42:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 2687 states have (on average 1.2754000744324525) internal successors, (3427), 2732 states have internal predecessors, (3427), 964 states have call successors, (964), 224 states have call predecessors, (964), 224 states have return successors, (964), 952 states have call predecessors, (964), 964 states have call successors, (964) [2021-11-13 02:42:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 5355 transitions. [2021-11-13 02:42:57,751 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 5355 transitions. Word has length 197 [2021-11-13 02:42:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:57,756 INFO L470 AbstractCegarLoop]: Abstraction has 3876 states and 5355 transitions. [2021-11-13 02:42:57,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 02:42:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 5355 transitions. [2021-11-13 02:42:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-13 02:42:57,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:57,780 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:57,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:57,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:57,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1020957030, now seen corresponding path program 1 times [2021-11-13 02:42:58,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:58,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4644843] [2021-11-13 02:42:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:58,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:58,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:58,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:58,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:43:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:02,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:02,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-13 02:43:03,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-13 02:43:04,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:04,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4644843] [2021-11-13 02:43:04,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4644843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:04,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:04,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:43:04,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890229039] [2021-11-13 02:43:04,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:43:04,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:43:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:43:04,603 INFO L87 Difference]: Start difference. First operand 3876 states and 5355 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-13 02:43:06,852 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 [] [2021-11-13 02:43:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:07,522 INFO L93 Difference]: Finished difference Result 10041 states and 13862 transitions. [2021-11-13 02:43:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:43:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 217 [2021-11-13 02:43:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:07,588 INFO L225 Difference]: With dead ends: 10041 [2021-11-13 02:43:07,589 INFO L226 Difference]: Without dead ends: 6186 [2021-11-13 02:43:07,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:43:07,613 INFO L933 BasicCegarLoop]: 2771 mSDtfsCounter, 1975 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2458.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2563.33ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:07,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 5056 Invalid, 65 Unknown, 0 Unchecked, 18.16ms Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2563.33ms Time] [2021-11-13 02:43:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-11-13 02:43:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6182. [2021-11-13 02:43:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4250 states have (on average 1.2703529411764707) internal successors, (5399), 4323 states have internal predecessors, (5399), 1559 states have call successors, (1559), 373 states have call predecessors, (1559), 372 states have return successors, (1560), 1535 states have call predecessors, (1560), 1559 states have call successors, (1560) [2021-11-13 02:43:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8518 transitions. [2021-11-13 02:43:07,972 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8518 transitions. Word has length 217 [2021-11-13 02:43:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:07,975 INFO L470 AbstractCegarLoop]: Abstraction has 6182 states and 8518 transitions. [2021-11-13 02:43:07,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-13 02:43:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8518 transitions. [2021-11-13 02:43:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-13 02:43:07,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:07,989 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:08,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:08,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:08,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1306383226, now seen corresponding path program 1 times [2021-11-13 02:43:08,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:08,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981666923] [2021-11-13 02:43:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:08,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:08,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:08,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:43:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:12,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:12,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2021-11-13 02:43:13,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-13 02:43:14,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:14,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981666923] [2021-11-13 02:43:14,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981666923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:14,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:14,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:43:14,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442302062] [2021-11-13 02:43:14,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:14,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:43:14,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:14,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:43:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:14,177 INFO L87 Difference]: Start difference. First operand 6182 states and 8518 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-13 02:43:16,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:43:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:23,835 INFO L93 Difference]: Finished difference Result 17025 states and 23424 transitions. [2021-11-13 02:43:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:43:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 260 [2021-11-13 02:43:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:23,972 INFO L225 Difference]: With dead ends: 17025 [2021-11-13 02:43:23,972 INFO L226 Difference]: Without dead ends: 10864 [2021-11-13 02:43:24,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:24,032 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 3735 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8220.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 8120 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.81ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8912.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:24,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3735 Valid, 8120 Invalid, 1028 Unknown, 0 Unchecked, 49.81ms Time], IncrementalHoareTripleChecker [38 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 8912.51ms Time] [2021-11-13 02:43:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2021-11-13 02:43:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10856. [2021-11-13 02:43:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10856 states, 7502 states have (on average 1.2695281258331113) internal successors, (9524), 7624 states have internal predecessors, (9524), 2687 states have call successors, (2687), 667 states have call predecessors, (2687), 666 states have return successors, (2688), 2648 states have call predecessors, (2688), 2687 states have call successors, (2688) [2021-11-13 02:43:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 14899 transitions. [2021-11-13 02:43:24,935 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 14899 transitions. Word has length 260 [2021-11-13 02:43:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:24,937 INFO L470 AbstractCegarLoop]: Abstraction has 10856 states and 14899 transitions. [2021-11-13 02:43:24,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-11-13 02:43:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 14899 transitions. [2021-11-13 02:43:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-13 02:43:24,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:24,956 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:25,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 02:43:25,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:25,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 483514323, now seen corresponding path program 1 times [2021-11-13 02:43:25,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:25,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249255120] [2021-11-13 02:43:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:25,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:25,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:25,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:25,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:43:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:29,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:29,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-13 02:43:30,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2021-11-13 02:43:31,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:31,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249255120] [2021-11-13 02:43:31,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249255120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:31,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:31,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:43:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859586570] [2021-11-13 02:43:31,374 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:31,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:43:31,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:43:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:31,376 INFO L87 Difference]: Start difference. First operand 10856 states and 14899 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-13 02:43:33,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:43:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:39,830 INFO L93 Difference]: Finished difference Result 24560 states and 33657 transitions. [2021-11-13 02:43:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:43:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 345 [2021-11-13 02:43:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:39,930 INFO L225 Difference]: With dead ends: 24560 [2021-11-13 02:43:39,930 INFO L226 Difference]: Without dead ends: 13725 [2021-11-13 02:43:39,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:39,987 INFO L933 BasicCegarLoop]: 4388 mSDtfsCounter, 3784 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 292 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7106.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 7492 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.22ms SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7909.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:39,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 7492 Invalid, 1270 Unknown, 0 Unchecked, 27.22ms Time], IncrementalHoareTripleChecker [292 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 7909.17ms Time] [2021-11-13 02:43:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13725 states. [2021-11-13 02:43:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13725 to 13717. [2021-11-13 02:43:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13717 states, 9437 states have (on average 1.2654445268623504) internal successors, (11942), 9592 states have internal predecessors, (11942), 3407 states have call successors, (3407), 874 states have call predecessors, (3407), 872 states have return successors, (3408), 3358 states have call predecessors, (3408), 3407 states have call successors, (3408) [2021-11-13 02:43:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 18757 transitions. [2021-11-13 02:43:40,845 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 18757 transitions. Word has length 345 [2021-11-13 02:43:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:40,846 INFO L470 AbstractCegarLoop]: Abstraction has 13717 states and 18757 transitions. [2021-11-13 02:43:40,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-13 02:43:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 18757 transitions. [2021-11-13 02:43:40,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-13 02:43:40,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:40,862 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:41,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:41,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1898367330, now seen corresponding path program 1 times [2021-11-13 02:43:41,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:41,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84257893] [2021-11-13 02:43:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:41,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:41,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:41,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:43:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:44,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-13 02:43:45,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-13 02:43:46,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:46,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84257893] [2021-11-13 02:43:46,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84257893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:46,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:46,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:43:46,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510747268] [2021-11-13 02:43:46,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:46,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:43:46,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:43:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:46,811 INFO L87 Difference]: Start difference. First operand 13717 states and 18757 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-13 02:43:49,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:43:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:56,238 INFO L93 Difference]: Finished difference Result 30566 states and 41771 transitions. [2021-11-13 02:43:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:43:56,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 361 [2021-11-13 02:43:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:56,362 INFO L225 Difference]: With dead ends: 30566 [2021-11-13 02:43:56,362 INFO L226 Difference]: Without dead ends: 16870 [2021-11-13 02:43:56,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:43:56,425 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 4215 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 450 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7677.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4215 SdHoareTripleChecker+Valid, 6908 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.34ms SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8446.86ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:56,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4215 Valid, 6908 Invalid, 1321 Unknown, 0 Unchecked, 27.34ms Time], IncrementalHoareTripleChecker [450 Valid, 870 Invalid, 1 Unknown, 0 Unchecked, 8446.86ms Time] [2021-11-13 02:43:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2021-11-13 02:43:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 16862. [2021-11-13 02:43:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16862 states, 11628 states have (on average 1.2645338837289302) internal successors, (14704), 11816 states have internal predecessors, (14704), 4152 states have call successors, (4152), 1083 states have call predecessors, (4152), 1081 states have return successors, (4153), 4092 states have call predecessors, (4153), 4152 states have call successors, (4153) [2021-11-13 02:43:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16862 states to 16862 states and 23009 transitions. [2021-11-13 02:43:57,862 INFO L78 Accepts]: Start accepts. Automaton has 16862 states and 23009 transitions. Word has length 361 [2021-11-13 02:43:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:57,864 INFO L470 AbstractCegarLoop]: Abstraction has 16862 states and 23009 transitions. [2021-11-13 02:43:57,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-13 02:43:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 16862 states and 23009 transitions. [2021-11-13 02:43:57,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-13 02:43:57,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:57,889 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:57,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:58,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:58,115 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash 647079952, now seen corresponding path program 1 times [2021-11-13 02:43:58,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:58,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878693090] [2021-11-13 02:43:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:58,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:58,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:58,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:44:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:03,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:03,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-11-13 02:44:04,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-13 02:44:06,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:06,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878693090] [2021-11-13 02:44:06,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878693090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:06,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:44:06,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:44:06,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15045535] [2021-11-13 02:44:06,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:06,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:06,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:44:06,075 INFO L87 Difference]: Start difference. First operand 16862 states and 23009 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:44:08,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:15,340 INFO L93 Difference]: Finished difference Result 36115 states and 49277 transitions. [2021-11-13 02:44:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 446 [2021-11-13 02:44:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:15,482 INFO L225 Difference]: With dead ends: 36115 [2021-11-13 02:44:15,483 INFO L226 Difference]: Without dead ends: 19274 [2021-11-13 02:44:15,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:44:15,570 INFO L933 BasicCegarLoop]: 3766 mSDtfsCounter, 3768 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7506.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.48ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8153.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:15,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3768 Valid, 6918 Invalid, 1035 Unknown, 0 Unchecked, 25.48ms Time], IncrementalHoareTripleChecker [35 Valid, 999 Invalid, 1 Unknown, 0 Unchecked, 8153.29ms Time] [2021-11-13 02:44:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19274 states. [2021-11-13 02:44:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19274 to 19266. [2021-11-13 02:44:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19266 states, 13340 states have (on average 1.2650674662668666) internal successors, (16876), 13554 states have internal predecessors, (16876), 4698 states have call successors, (4698), 1229 states have call predecessors, (4698), 1227 states have return successors, (4699), 4630 states have call predecessors, (4699), 4698 states have call successors, (4699) [2021-11-13 02:44:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19266 states to 19266 states and 26273 transitions. [2021-11-13 02:44:17,119 INFO L78 Accepts]: Start accepts. Automaton has 19266 states and 26273 transitions. Word has length 446 [2021-11-13 02:44:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:17,120 INFO L470 AbstractCegarLoop]: Abstraction has 19266 states and 26273 transitions. [2021-11-13 02:44:17,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:44:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 19266 states and 26273 transitions. [2021-11-13 02:44:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-13 02:44:17,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:17,276 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 11, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:17,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:17,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:44:17,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:17,489 INFO L85 PathProgramCache]: Analyzing trace with hash -941715393, now seen corresponding path program 1 times [2021-11-13 02:44:17,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:17,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476243891] [2021-11-13 02:44:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:17,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:17,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:17,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:44:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:22,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:22,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-13 02:44:24,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2021-11-13 02:44:25,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:25,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476243891] [2021-11-13 02:44:25,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476243891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:25,392 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:44:25,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:44:25,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638734547] [2021-11-13 02:44:25,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:25,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:25,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:44:25,395 INFO L87 Difference]: Start difference. First operand 19266 states and 26273 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-13 02:44:27,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:34,893 INFO L93 Difference]: Finished difference Result 40909 states and 55783 transitions. [2021-11-13 02:44:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 450 [2021-11-13 02:44:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:35,048 INFO L225 Difference]: With dead ends: 40909 [2021-11-13 02:44:35,049 INFO L226 Difference]: Without dead ends: 21664 [2021-11-13 02:44:35,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:44:35,143 INFO L933 BasicCegarLoop]: 4055 mSDtfsCounter, 3779 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7619.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 7197 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.91ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8268.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:35,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3779 Valid, 7197 Invalid, 1034 Unknown, 0 Unchecked, 23.91ms Time], IncrementalHoareTripleChecker [33 Valid, 1000 Invalid, 1 Unknown, 0 Unchecked, 8268.00ms Time] [2021-11-13 02:44:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21664 states. [2021-11-13 02:44:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21664 to 21656. [2021-11-13 02:44:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21656 states, 15038 states have (on average 1.26506184333023) internal successors, (19024), 15278 states have internal predecessors, (19024), 5244 states have call successors, (5244), 1375 states have call predecessors, (5244), 1373 states have return successors, (5245), 5168 states have call predecessors, (5245), 5244 states have call successors, (5245) [2021-11-13 02:44:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21656 states to 21656 states and 29513 transitions. [2021-11-13 02:44:37,056 INFO L78 Accepts]: Start accepts. Automaton has 21656 states and 29513 transitions. Word has length 450 [2021-11-13 02:44:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:37,057 INFO L470 AbstractCegarLoop]: Abstraction has 21656 states and 29513 transitions. [2021-11-13 02:44:37,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 4 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-13 02:44:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21656 states and 29513 transitions. [2021-11-13 02:44:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-13 02:44:37,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:37,089 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:37,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:44:37,303 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash 555672794, now seen corresponding path program 1 times [2021-11-13 02:44:37,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:37,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428410087] [2021-11-13 02:44:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:37,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:37,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:37,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:37,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:44:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:42,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:44:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-11-13 02:44:45,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-11-13 02:44:48,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:48,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428410087] [2021-11-13 02:44:48,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428410087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:48,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:44:48,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-11-13 02:44:48,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929501279] [2021-11-13 02:44:48,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 02:44:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 02:44:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:44:48,274 INFO L87 Difference]: Start difference. First operand 21656 states and 29513 transitions. Second operand has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2021-11-13 02:44:50,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:52,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:59,738 INFO L93 Difference]: Finished difference Result 67579 states and 92863 transitions. [2021-11-13 02:45:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-13 02:45:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) Word has length 455 [2021-11-13 02:45:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:59,971 INFO L225 Difference]: With dead ends: 67579 [2021-11-13 02:45:59,971 INFO L226 Difference]: Without dead ends: 45880 [2021-11-13 02:46:00,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=759, Invalid=4497, Unknown=0, NotChecked=0, Total=5256 [2021-11-13 02:46:00,106 INFO L933 BasicCegarLoop]: 6347 mSDtfsCounter, 11172 mSDsluCounter, 88370 mSDsCounter, 0 mSdLazyCounter, 14289 mSolverCounterSat, 2460 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59318.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11388 SdHoareTripleChecker+Valid, 94717 SdHoareTripleChecker+Invalid, 16751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 286.17ms SdHoareTripleChecker+Time, 2460 IncrementalHoareTripleChecker+Valid, 14289 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63123.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:00,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11388 Valid, 94717 Invalid, 16751 Unknown, 0 Unchecked, 286.17ms Time], IncrementalHoareTripleChecker [2460 Valid, 14289 Invalid, 2 Unknown, 0 Unchecked, 63123.37ms Time] [2021-11-13 02:46:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45880 states. [2021-11-13 02:46:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45880 to 30172. [2021-11-13 02:46:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30172 states, 20987 states have (on average 1.2645447181588603) internal successors, (26539), 21330 states have internal predecessors, (26539), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-13 02:46:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30172 states to 30172 states and 41126 transitions. [2021-11-13 02:46:03,116 INFO L78 Accepts]: Start accepts. Automaton has 30172 states and 41126 transitions. Word has length 455 [2021-11-13 02:46:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:03,119 INFO L470 AbstractCegarLoop]: Abstraction has 30172 states and 41126 transitions. [2021-11-13 02:46:03,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 13.0) internal successors, (286), 22 states have internal predecessors, (286), 10 states have call successors, (74), 3 states have call predecessors, (74), 7 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2021-11-13 02:46:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 30172 states and 41126 transitions. [2021-11-13 02:46:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2021-11-13 02:46:03,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:03,137 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:03,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:03,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:46:03,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash -605283740, now seen corresponding path program 1 times [2021-11-13 02:46:03,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:03,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907897931] [2021-11-13 02:46:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:03,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:03,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:03,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:46:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:09,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 3900 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:09,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2021-11-13 02:46:12,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2021-11-13 02:46:14,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:14,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907897931] [2021-11-13 02:46:14,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907897931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:46:14,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:46:14,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:46:14,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524245810] [2021-11-13 02:46:14,754 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:14,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:46:14,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:46:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:46:14,758 INFO L87 Difference]: Start difference. First operand 30172 states and 41126 transitions. Second operand has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-13 02:46:17,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:46:20,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:46:22,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:46:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:25,272 INFO L93 Difference]: Finished difference Result 65225 states and 89251 transitions. [2021-11-13 02:46:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:46:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) Word has length 756 [2021-11-13 02:46:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:25,410 INFO L225 Difference]: With dead ends: 65225 [2021-11-13 02:46:25,410 INFO L226 Difference]: Without dead ends: 35074 [2021-11-13 02:46:25,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1505 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:46:25,510 INFO L933 BasicCegarLoop]: 2921 mSDtfsCounter, 1670 mSDsluCounter, 13746 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 305 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7643.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 16667 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.63ms SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7889.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:25,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 16667 Invalid, 423 Unknown, 0 Unchecked, 23.63ms Time], IncrementalHoareTripleChecker [305 Valid, 116 Invalid, 2 Unknown, 0 Unchecked, 7889.37ms Time] [2021-11-13 02:46:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35074 states. [2021-11-13 02:46:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35074 to 30184. [2021-11-13 02:46:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30184 states, 20999 states have (on average 1.2643935425496453) internal successors, (26551), 21342 states have internal predecessors, (26551), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-13 02:46:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30184 states to 30184 states and 41138 transitions. [2021-11-13 02:46:28,294 INFO L78 Accepts]: Start accepts. Automaton has 30184 states and 41138 transitions. Word has length 756 [2021-11-13 02:46:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:28,296 INFO L470 AbstractCegarLoop]: Abstraction has 30184 states and 41138 transitions. [2021-11-13 02:46:28,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-13 02:46:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30184 states and 41138 transitions. [2021-11-13 02:46:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-13 02:46:28,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:28,317 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:28,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:28,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:46:28,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1971496410, now seen corresponding path program 1 times [2021-11-13 02:46:28,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:28,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909695692] [2021-11-13 02:46:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:28,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:28,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:28,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:28,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:46:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:35,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 3947 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:46:35,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-13 02:46:38,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-13 02:46:40,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:40,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909695692] [2021-11-13 02:46:40,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909695692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:46:40,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:46:40,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:46:40,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388859420] [2021-11-13 02:46:40,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:40,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:46:40,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:46:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:46:40,401 INFO L87 Difference]: Start difference. First operand 30184 states and 41138 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-13 02:46:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:42,493 INFO L93 Difference]: Finished difference Result 60351 states and 82255 transitions. [2021-11-13 02:46:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:46:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 777 [2021-11-13 02:46:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:42,607 INFO L225 Difference]: With dead ends: 60351 [2021-11-13 02:46:42,607 INFO L226 Difference]: Without dead ends: 30188 [2021-11-13 02:46:42,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:46:42,689 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 0 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.58ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:42,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4745 Invalid, 6 Unknown, 0 Unchecked, 8.08ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 59.58ms Time] [2021-11-13 02:46:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30188 states. [2021-11-13 02:46:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30188 to 30188. [2021-11-13 02:46:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30188 states, 21003 states have (on average 1.2643431890682284) internal successors, (26555), 21346 states have internal predecessors, (26555), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-13 02:46:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30188 states to 30188 states and 41142 transitions. [2021-11-13 02:46:45,146 INFO L78 Accepts]: Start accepts. Automaton has 30188 states and 41142 transitions. Word has length 777 [2021-11-13 02:46:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:45,147 INFO L470 AbstractCegarLoop]: Abstraction has 30188 states and 41142 transitions. [2021-11-13 02:46:45,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-13 02:46:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 30188 states and 41142 transitions. [2021-11-13 02:46:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-13 02:46:45,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:45,168 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:45,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:45,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:46:45,391 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1237757352, now seen corresponding path program 1 times [2021-11-13 02:46:45,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:45,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949840536] [2021-11-13 02:46:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:45,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:45,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:46:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:51,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 3950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:46:51,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-13 02:46:54,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-13 02:46:56,107 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:56,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949840536] [2021-11-13 02:46:56,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949840536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:46:56,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:46:56,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:46:56,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924507837] [2021-11-13 02:46:56,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:56,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:46:56,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:46:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:46:56,110 INFO L87 Difference]: Start difference. First operand 30188 states and 41142 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-13 02:46:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:58,138 INFO L93 Difference]: Finished difference Result 60359 states and 82263 transitions. [2021-11-13 02:46:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:46:58,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 777 [2021-11-13 02:46:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:58,397 INFO L225 Difference]: With dead ends: 60359 [2021-11-13 02:46:58,397 INFO L226 Difference]: Without dead ends: 30192 [2021-11-13 02:46:58,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:46:58,469 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 0 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:58,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4745 Invalid, 6 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 47.11ms Time] [2021-11-13 02:46:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30192 states. [2021-11-13 02:47:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30192 to 30192. [2021-11-13 02:47:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30192 states, 21007 states have (on average 1.2642928547626981) internal successors, (26559), 21350 states have internal predecessors, (26559), 7293 states have call successors, (7293), 1893 states have call predecessors, (7293), 1891 states have return successors, (7294), 7183 states have call predecessors, (7294), 7293 states have call successors, (7294) [2021-11-13 02:47:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30192 states to 30192 states and 41146 transitions. [2021-11-13 02:47:00,723 INFO L78 Accepts]: Start accepts. Automaton has 30192 states and 41146 transitions. Word has length 777 [2021-11-13 02:47:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:00,724 INFO L470 AbstractCegarLoop]: Abstraction has 30192 states and 41146 transitions. [2021-11-13 02:47:00,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 2 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-13 02:47:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 30192 states and 41146 transitions. [2021-11-13 02:47:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-13 02:47:00,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:00,751 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:00,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:00,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:47:00,975 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:47:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1190375654, now seen corresponding path program 1 times [2021-11-13 02:47:00,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:00,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162759863] [2021-11-13 02:47:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:00,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:00,982 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:00,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:47:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:07,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:47:07,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2021-11-13 02:47:12,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-13 02:47:14,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:14,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162759863] [2021-11-13 02:47:14,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162759863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:47:14,742 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:47:14,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-13 02:47:14,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293035431] [2021-11-13 02:47:14,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:47:14,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:47:14,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:47:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:47:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:47:14,745 INFO L87 Difference]: Start difference. First operand 30192 states and 41146 transitions. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2021-11-13 02:47:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:17,498 INFO L93 Difference]: Finished difference Result 61510 states and 83628 transitions. [2021-11-13 02:47:17,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:47:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) Word has length 777 [2021-11-13 02:47:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:17,617 INFO L225 Difference]: With dead ends: 61510 [2021-11-13 02:47:17,617 INFO L226 Difference]: Without dead ends: 31339 [2021-11-13 02:47:17,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1550 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:47:17,696 INFO L933 BasicCegarLoop]: 2447 mSDtfsCounter, 349 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 7080 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.81ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 316.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:17,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 7080 Invalid, 85 Unknown, 0 Unchecked, 11.81ms Time], IncrementalHoareTripleChecker [33 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 316.76ms Time] [2021-11-13 02:47:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31339 states. [2021-11-13 02:47:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31339 to 31307. [2021-11-13 02:47:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31307 states, 21830 states have (on average 1.2606962895098488) internal successors, (27521), 22181 states have internal predecessors, (27521), 7476 states have call successors, (7476), 2002 states have call predecessors, (7476), 2000 states have return successors, (7477), 7360 states have call predecessors, (7477), 7476 states have call successors, (7477) [2021-11-13 02:47:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31307 states to 31307 states and 42474 transitions. [2021-11-13 02:47:19,773 INFO L78 Accepts]: Start accepts. Automaton has 31307 states and 42474 transitions. Word has length 777 [2021-11-13 02:47:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:19,775 INFO L470 AbstractCegarLoop]: Abstraction has 31307 states and 42474 transitions. [2021-11-13 02:47:19,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 4 states have call successors, (167), 3 states have call predecessors, (167), 3 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2021-11-13 02:47:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 31307 states and 42474 transitions. [2021-11-13 02:47:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2021-11-13 02:47:19,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:19,800 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:19,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:20,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:47:20,015 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:47:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 739195376, now seen corresponding path program 1 times [2021-11-13 02:47:20,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:20,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623142979] [2021-11-13 02:47:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:20,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:20,031 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:20,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:47:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:26,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 4004 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:47:26,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 1436 trivial. 0 not checked. [2021-11-13 02:47:29,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2021-11-13 02:47:31,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:31,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623142979] [2021-11-13 02:47:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623142979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:47:31,870 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:47:31,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:47:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211675939] [2021-11-13 02:47:31,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:47:31,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:47:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:47:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:47:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:47:31,873 INFO L87 Difference]: Start difference. First operand 31307 states and 42474 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2021-11-13 02:47:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:34,706 INFO L93 Difference]: Finished difference Result 70017 states and 95923 transitions. [2021-11-13 02:47:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:47:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 797 [2021-11-13 02:47:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:34,832 INFO L225 Difference]: With dead ends: 70017 [2021-11-13 02:47:34,832 INFO L226 Difference]: Without dead ends: 39699 [2021-11-13 02:47:34,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1592 GetRequests, 1591 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:47:34,902 INFO L933 BasicCegarLoop]: 2732 mSDtfsCounter, 564 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:34,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 5117 Invalid, 8 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 28.23ms Time] [2021-11-13 02:47:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39699 states. [2021-11-13 02:47:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39699 to 31342. [2021-11-13 02:47:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31342 states, 21840 states have (on average 1.260576923076923) internal successors, (27531), 22191 states have internal predecessors, (27531), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2000 states have return successors, (7502), 7385 states have call predecessors, (7502), 7501 states have call successors, (7502) [2021-11-13 02:47:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31342 states to 31342 states and 42534 transitions. [2021-11-13 02:47:37,471 INFO L78 Accepts]: Start accepts. Automaton has 31342 states and 42534 transitions. Word has length 797 [2021-11-13 02:47:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:37,473 INFO L470 AbstractCegarLoop]: Abstraction has 31342 states and 42534 transitions. [2021-11-13 02:47:37,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 2 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2021-11-13 02:47:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31342 states and 42534 transitions. [2021-11-13 02:47:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2021-11-13 02:47:37,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:37,498 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:37,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:37,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:47:37,715 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:47:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1736194418, now seen corresponding path program 1 times [2021-11-13 02:47:37,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:37,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114220512] [2021-11-13 02:47:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:37,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:37,729 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:37,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:47:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:44,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 4028 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 02:47:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 1523 trivial. 0 not checked. [2021-11-13 02:47:47,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2021-11-13 02:47:50,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:50,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114220512] [2021-11-13 02:47:50,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114220512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:47:50,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:47:50,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 02:47:50,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193733244] [2021-11-13 02:47:50,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:47:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:47:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:47:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:47:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:47:50,217 INFO L87 Difference]: Start difference. First operand 31342 states and 42534 transitions. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) [2021-11-13 02:47:52,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:47:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:55,260 INFO L93 Difference]: Finished difference Result 66717 states and 91033 transitions. [2021-11-13 02:47:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:47:55,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) Word has length 804 [2021-11-13 02:47:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:55,370 INFO L225 Difference]: With dead ends: 66717 [2021-11-13 02:47:55,370 INFO L226 Difference]: Without dead ends: 36371 [2021-11-13 02:47:55,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1606 GetRequests, 1596 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:47:55,570 INFO L933 BasicCegarLoop]: 2950 mSDtfsCounter, 669 mSDsluCounter, 25876 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2313.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 28826 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2432.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:55,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 28826 Invalid, 125 Unknown, 0 Unchecked, 33.96ms Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 2432.56ms Time] [2021-11-13 02:47:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2021-11-13 02:47:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 31370. [2021-11-13 02:47:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31370 states, 21860 states have (on average 1.260338517840805) internal successors, (27551), 22211 states have internal predecessors, (27551), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-13 02:47:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31370 states to 31370 states and 42570 transitions. [2021-11-13 02:47:57,824 INFO L78 Accepts]: Start accepts. Automaton has 31370 states and 42570 transitions. Word has length 804 [2021-11-13 02:47:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:57,825 INFO L470 AbstractCegarLoop]: Abstraction has 31370 states and 42570 transitions. [2021-11-13 02:47:57,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 8 states have internal predecessors, (409), 2 states have call successors, (139), 2 states have call predecessors, (139), 6 states have return successors, (136), 6 states have call predecessors, (136), 2 states have call successors, (136) [2021-11-13 02:47:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 31370 states and 42570 transitions. [2021-11-13 02:47:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2021-11-13 02:47:57,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:57,849 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:57,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:58,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:47:58,069 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:47:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1253090032, now seen corresponding path program 1 times [2021-11-13 02:47:58,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:58,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707195433] [2021-11-13 02:47:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:58,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:58,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:58,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:48:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:05,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 4060 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:48:05,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:48:12,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:48:25,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:48:25,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707195433] [2021-11-13 02:48:25,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707195433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:25,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [574968110] [2021-11-13 02:48:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:25,817 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:48:25,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:48:25,819 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:48:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 02:48:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:28,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 4060 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:48:28,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2021-11-13 02:48:30,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:48:32,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [574968110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:48:32,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:48:32,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [22, 21] total 39 [2021-11-13 02:48:32,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459515923] [2021-11-13 02:48:32,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:48:32,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:48:32,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:48:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:48:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1377, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 02:48:32,429 INFO L87 Difference]: Start difference. First operand 31370 states and 42570 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2021-11-13 02:48:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:48:34,414 INFO L93 Difference]: Finished difference Result 61754 states and 83946 transitions. [2021-11-13 02:48:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:48:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) Word has length 820 [2021-11-13 02:48:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:48:34,556 INFO L225 Difference]: With dead ends: 61754 [2021-11-13 02:48:34,557 INFO L226 Difference]: Without dead ends: 31380 [2021-11-13 02:48:34,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3276 GetRequests, 3239 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=105, Invalid=1377, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 02:48:34,667 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 0 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:48:34,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4746 Invalid, 5 Unknown, 0 Unchecked, 6.70ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 19.68ms Time] [2021-11-13 02:48:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-11-13 02:48:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 31380. [2021-11-13 02:48:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31380 states, 21870 states have (on average 1.2602194787379972) internal successors, (27561), 22221 states have internal predecessors, (27561), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-13 02:48:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31380 states to 31380 states and 42580 transitions. [2021-11-13 02:48:37,421 INFO L78 Accepts]: Start accepts. Automaton has 31380 states and 42580 transitions. Word has length 820 [2021-11-13 02:48:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:48:37,422 INFO L470 AbstractCegarLoop]: Abstraction has 31380 states and 42580 transitions. [2021-11-13 02:48:37,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2021-11-13 02:48:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 31380 states and 42580 transitions. [2021-11-13 02:48:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2021-11-13 02:48:37,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:48:37,439 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:48:37,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:37,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:37,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:48:37,840 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:48:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:48:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 285739378, now seen corresponding path program 1 times [2021-11-13 02:48:37,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:48:37,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118752337] [2021-11-13 02:48:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:37,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:48:37,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:48:37,865 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:48:37,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:48:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:44,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 4062 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:48:45,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:48:52,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:49:05,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:49:05,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118752337] [2021-11-13 02:49:05,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118752337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:49:05,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252633782] [2021-11-13 02:49:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:49:05,306 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:49:05,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:49:05,307 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:49:05,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 02:49:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:49:08,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 4062 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:49:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:49:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:49:15,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:49:19,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252633782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:49:19,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:49:19,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [22, 21] total 41 [2021-11-13 02:49:19,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908991741] [2021-11-13 02:49:19,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:49:19,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:49:19,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:49:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:49:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:49:19,480 INFO L87 Difference]: Start difference. First operand 31380 states and 42580 transitions. Second operand has 5 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:49:21,764 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 [] [2021-11-13 02:49:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:49:28,750 INFO L93 Difference]: Finished difference Result 61764 states and 84120 transitions. [2021-11-13 02:49:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:49:28,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) Word has length 820 [2021-11-13 02:49:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:49:28,882 INFO L225 Difference]: With dead ends: 61764 [2021-11-13 02:49:28,882 INFO L226 Difference]: Without dead ends: 31380 [2021-11-13 02:49:29,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3276 GetRequests, 3237 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:49:29,009 INFO L933 BasicCegarLoop]: 2374 mSDtfsCounter, 2034 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6309.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.29ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6859.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:49:29,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2034 Valid, 3851 Invalid, 1019 Unknown, 0 Unchecked, 14.29ms Time], IncrementalHoareTripleChecker [120 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6859.53ms Time] [2021-11-13 02:49:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-11-13 02:49:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 31380. [2021-11-13 02:49:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31380 states, 21870 states have (on average 1.2590306355738454) internal successors, (27535), 22221 states have internal predecessors, (27535), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-13 02:49:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31380 states to 31380 states and 42554 transitions. [2021-11-13 02:49:31,744 INFO L78 Accepts]: Start accepts. Automaton has 31380 states and 42554 transitions. Word has length 820 [2021-11-13 02:49:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:49:31,744 INFO L470 AbstractCegarLoop]: Abstraction has 31380 states and 42554 transitions. [2021-11-13 02:49:31,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:49:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 31380 states and 42554 transitions. [2021-11-13 02:49:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2021-11-13 02:49:31,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:49:31,756 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:49:31,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:49:32,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:49:32,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:49:32,157 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:49:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:49:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2095634561, now seen corresponding path program 1 times [2021-11-13 02:49:32,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:49:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974160018] [2021-11-13 02:49:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:49:32,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:49:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:49:32,167 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:49:32,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:49:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:49:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:49:38,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:49:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:49:45,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:49:58,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:49:58,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974160018] [2021-11-13 02:49:58,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974160018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:49:58,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1947509469] [2021-11-13 02:49:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:49:58,066 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:49:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:49:58,066 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:49:58,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 02:50:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:50:01,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:50:01,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:50:08,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:50:11,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1947509469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:50:11,973 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:50:11,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [22, 21] total 41 [2021-11-13 02:50:11,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194490567] [2021-11-13 02:50:11,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:50:11,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:50:11,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:50:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:50:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:50:11,978 INFO L87 Difference]: Start difference. First operand 31380 states and 42554 transitions. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:50:14,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:50:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:50:21,950 INFO L93 Difference]: Finished difference Result 61764 states and 84068 transitions. [2021-11-13 02:50:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:50:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) Word has length 821 [2021-11-13 02:50:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:50:22,083 INFO L225 Difference]: With dead ends: 61764 [2021-11-13 02:50:22,083 INFO L226 Difference]: Without dead ends: 31380 [2021-11-13 02:50:22,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3280 GetRequests, 3241 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:50:22,167 INFO L933 BasicCegarLoop]: 2373 mSDtfsCounter, 3218 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 841 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6690.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3218 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.03ms SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7304.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:50:22,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3218 Valid, 3849 Invalid, 1740 Unknown, 0 Unchecked, 19.03ms Time], IncrementalHoareTripleChecker [841 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 7304.51ms Time] [2021-11-13 02:50:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-11-13 02:50:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 31380. [2021-11-13 02:50:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31380 states, 21870 states have (on average 1.2578417924096936) internal successors, (27509), 22221 states have internal predecessors, (27509), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-13 02:50:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31380 states to 31380 states and 42528 transitions. [2021-11-13 02:50:24,960 INFO L78 Accepts]: Start accepts. Automaton has 31380 states and 42528 transitions. Word has length 821 [2021-11-13 02:50:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:50:24,961 INFO L470 AbstractCegarLoop]: Abstraction has 31380 states and 42528 transitions. [2021-11-13 02:50:24,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:50:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31380 states and 42528 transitions. [2021-11-13 02:50:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2021-11-13 02:50:24,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:50:24,977 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:50:25,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:50:25,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:50:25,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:50:25,391 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:50:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:50:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1505701262, now seen corresponding path program 1 times [2021-11-13 02:50:25,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:50:25,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208104634] [2021-11-13 02:50:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:50:25,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:50:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:50:25,398 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:50:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 02:50:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:50:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:50:32,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:50:39,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:50:51,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:50:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208104634] [2021-11-13 02:50:51,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208104634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:50:51,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1013896101] [2021-11-13 02:50:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:50:51,176 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:50:51,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:50:51,177 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:50:51,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-13 02:50:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:50:53,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:50:53,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:51:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:51:00,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:51:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:51:03,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1013896101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:51:03,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:51:03,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [22, 21] total 41 [2021-11-13 02:51:03,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472940212] [2021-11-13 02:51:03,588 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:51:03,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:51:03,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:51:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:51:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:51:03,590 INFO L87 Difference]: Start difference. First operand 31380 states and 42528 transitions. Second operand has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:51:05,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:51:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:51:13,247 INFO L93 Difference]: Finished difference Result 61764 states and 84016 transitions. [2021-11-13 02:51:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:51:13,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) Word has length 822 [2021-11-13 02:51:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:51:13,353 INFO L225 Difference]: With dead ends: 61764 [2021-11-13 02:51:13,353 INFO L226 Difference]: Without dead ends: 31380 [2021-11-13 02:51:13,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3284 GetRequests, 3245 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:51:13,430 INFO L933 BasicCegarLoop]: 2372 mSDtfsCounter, 2032 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6274.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.25ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6814.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:51:13,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2032 Valid, 3847 Invalid, 1019 Unknown, 0 Unchecked, 14.25ms Time], IncrementalHoareTripleChecker [120 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6814.10ms Time] [2021-11-13 02:51:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-11-13 02:51:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 31380. [2021-11-13 02:51:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31380 states, 21870 states have (on average 1.2566529492455418) internal successors, (27483), 22221 states have internal predecessors, (27483), 7501 states have call successors, (7501), 2002 states have call predecessors, (7501), 2008 states have return successors, (7518), 7393 states have call predecessors, (7518), 7501 states have call successors, (7518) [2021-11-13 02:51:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31380 states to 31380 states and 42502 transitions. [2021-11-13 02:51:15,928 INFO L78 Accepts]: Start accepts. Automaton has 31380 states and 42502 transitions. Word has length 822 [2021-11-13 02:51:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:51:15,929 INFO L470 AbstractCegarLoop]: Abstraction has 31380 states and 42502 transitions. [2021-11-13 02:51:15,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 3 states have call successors, (182), 3 states have call predecessors, (182), 4 states have return successors, (170), 4 states have call predecessors, (170), 3 states have call successors, (170) [2021-11-13 02:51:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 31380 states and 42502 transitions. [2021-11-13 02:51:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2021-11-13 02:51:15,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:51:15,942 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:51:16,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:51:16,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:51:16,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:51:16,359 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:51:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:51:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1592478683, now seen corresponding path program 1 times [2021-11-13 02:51:16,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:51:16,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296409569] [2021-11-13 02:51:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:51:16,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:51:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:51:16,367 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:51:16,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:51:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:51:23,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 4065 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:51:23,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:51:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:51:30,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:51:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:51:42,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:51:42,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296409569] [2021-11-13 02:51:42,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296409569] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:51:42,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401809677] [2021-11-13 02:51:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:51:42,732 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:51:42,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:51:42,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:51:42,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 02:51:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:51:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 4065 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:51:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:51:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2021-11-13 02:51:48,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:51:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:51:51,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1401809677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:51:51,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:51:51,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [22, 21] total 42 [2021-11-13 02:51:51,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563172850] [2021-11-13 02:51:51,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:51:51,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:51:51,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:51:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:51:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1607, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 02:51:51,130 INFO L87 Difference]: Start difference. First operand 31380 states and 42502 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 6 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) [2021-11-13 02:51:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:51:54,469 INFO L93 Difference]: Finished difference Result 62514 states and 85342 transitions. [2021-11-13 02:51:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:51:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 6 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) Word has length 823 [2021-11-13 02:51:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:51:54,636 INFO L225 Difference]: With dead ends: 62514 [2021-11-13 02:51:54,637 INFO L226 Difference]: Without dead ends: 32130 [2021-11-13 02:51:54,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3290 GetRequests, 3248 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 02:51:54,742 INFO L933 BasicCegarLoop]: 2402 mSDtfsCounter, 60 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 388.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 7089 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.82ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 427.19ms IncrementalHoareTripleChecker+Time [2021-11-13 02:51:54,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 7089 Invalid, 163 Unknown, 0 Unchecked, 10.82ms Time], IncrementalHoareTripleChecker [66 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 427.19ms Time] [2021-11-13 02:51:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32130 states. [2021-11-13 02:51:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32130 to 32130. [2021-11-13 02:51:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32130 states, 22230 states have (on average 1.25510571300045) internal successors, (27901), 22529 states have internal predecessors, (27901), 7867 states have call successors, (7867), 2026 states have call predecessors, (7867), 2032 states have return successors, (7916), 7785 states have call predecessors, (7916), 7867 states have call successors, (7916) [2021-11-13 02:51:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32130 states to 32130 states and 43684 transitions. [2021-11-13 02:51:57,867 INFO L78 Accepts]: Start accepts. Automaton has 32130 states and 43684 transitions. Word has length 823 [2021-11-13 02:51:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:51:57,868 INFO L470 AbstractCegarLoop]: Abstraction has 32130 states and 43684 transitions. [2021-11-13 02:51:57,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 6 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (132), 6 states have call predecessors, (132), 6 states have call successors, (132) [2021-11-13 02:51:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 32130 states and 43684 transitions. [2021-11-13 02:51:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2021-11-13 02:51:57,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:51:57,881 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:51:57,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-13 02:51:58,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-13 02:51:58,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:51:58,282 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:51:58,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:51:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1091413285, now seen corresponding path program 1 times [2021-11-13 02:51:58,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:51:58,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548654237] [2021-11-13 02:51:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:51:58,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:51:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:51:58,289 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:51:58,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 02:52:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:52:05,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:52:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:52:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:52:12,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:52:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:52:24,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:52:24,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548654237] [2021-11-13 02:52:24,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548654237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:52:24,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [165700034] [2021-11-13 02:52:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:52:24,560 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:52:24,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:52:24,561 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:52:24,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-13 02:52:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:52:27,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:52:27,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:52:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2021-11-13 02:52:30,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:52:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:52:31,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [165700034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:52:31,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:52:31,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [22, 21] total 41 [2021-11-13 02:52:31,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137935583] [2021-11-13 02:52:31,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:52:31,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:52:31,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:52:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:52:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1531, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 02:52:31,796 INFO L87 Difference]: Start difference. First operand 32130 states and 43684 transitions. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:52:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:52:37,556 INFO L93 Difference]: Finished difference Result 82282 states and 113735 transitions. [2021-11-13 02:52:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:52:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 824 [2021-11-13 02:52:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:52:37,749 INFO L225 Difference]: With dead ends: 82282 [2021-11-13 02:52:37,749 INFO L226 Difference]: Without dead ends: 51148 [2021-11-13 02:52:37,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3296 GetRequests, 3255 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=119, Invalid=1687, Unknown=0, NotChecked=0, Total=1806 [2021-11-13 02:52:37,855 INFO L933 BasicCegarLoop]: 3388 mSDtfsCounter, 2575 mSDsluCounter, 8970 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 741.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 12358 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.58ms SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 893.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:52:37,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2702 Valid, 12358 Invalid, 627 Unknown, 0 Unchecked, 18.58ms Time], IncrementalHoareTripleChecker [611 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 893.16ms Time] [2021-11-13 02:52:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51148 states. [2021-11-13 02:52:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51148 to 32142. [2021-11-13 02:52:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32142 states, 22242 states have (on average 1.2549680784102148) internal successors, (27913), 22541 states have internal predecessors, (27913), 7867 states have call successors, (7867), 2026 states have call predecessors, (7867), 2032 states have return successors, (7916), 7785 states have call predecessors, (7916), 7867 states have call successors, (7916) [2021-11-13 02:52:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32142 states to 32142 states and 43696 transitions. [2021-11-13 02:52:41,019 INFO L78 Accepts]: Start accepts. Automaton has 32142 states and 43696 transitions. Word has length 824 [2021-11-13 02:52:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:52:41,020 INFO L470 AbstractCegarLoop]: Abstraction has 32142 states and 43696 transitions. [2021-11-13 02:52:41,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:52:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 32142 states and 43696 transitions. [2021-11-13 02:52:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2021-11-13 02:52:41,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:52:41,032 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:52:41,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-13 02:52:41,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 02:52:41,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:52:41,433 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:52:41,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:52:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1247655463, now seen corresponding path program 1 times [2021-11-13 02:52:41,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:52:41,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537532712] [2021-11-13 02:52:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:52:41,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:52:41,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:52:41,443 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:52:41,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 02:52:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:52:48,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:52:48,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:52:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 758 proven. 127 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2021-11-13 02:52:55,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:53:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2021-11-13 02:53:07,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:53:07,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537532712] [2021-11-13 02:53:07,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537532712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:53:07,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175804125] [2021-11-13 02:53:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:53:07,013 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:53:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:53:07,019 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:53:07,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-13 02:53:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:53:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:53:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:53:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2021-11-13 02:53:11,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:53:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-11-13 02:53:13,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175804125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:53:13,507 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:53:13,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [22, 21] total 40 [2021-11-13 02:53:13,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158936573] [2021-11-13 02:53:13,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:53:13,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:53:13,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:53:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:53:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1452, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 02:53:13,511 INFO L87 Difference]: Start difference. First operand 32142 states and 43696 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:53:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:53:17,897 INFO L93 Difference]: Finished difference Result 77378 states and 106548 transitions. [2021-11-13 02:53:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:53:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 824 [2021-11-13 02:53:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:53:18,041 INFO L225 Difference]: With dead ends: 77378 [2021-11-13 02:53:18,041 INFO L226 Difference]: Without dead ends: 46232 [2021-11-13 02:53:18,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3292 GetRequests, 3254 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=108, Invalid=1452, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 02:53:18,129 INFO L933 BasicCegarLoop]: 3227 mSDtfsCounter, 851 mSDsluCounter, 5349 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 560.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 8576 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 638.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:53:18,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 8576 Invalid, 127 Unknown, 0 Unchecked, 11.63ms Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 638.09ms Time] [2021-11-13 02:53:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46232 states. [2021-11-13 02:53:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46232 to 32146. [2021-11-13 02:53:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32146 states, 22246 states have (on average 1.2549222332104648) internal successors, (27917), 22545 states have internal predecessors, (27917), 7867 states have call successors, (7867), 2026 states have call predecessors, (7867), 2032 states have return successors, (7916), 7785 states have call predecessors, (7916), 7867 states have call successors, (7916) [2021-11-13 02:53:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32146 states to 32146 states and 43700 transitions. [2021-11-13 02:53:21,036 INFO L78 Accepts]: Start accepts. Automaton has 32146 states and 43700 transitions. Word has length 824 [2021-11-13 02:53:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:53:21,037 INFO L470 AbstractCegarLoop]: Abstraction has 32146 states and 43700 transitions. [2021-11-13 02:53:21,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:53:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 32146 states and 43700 transitions. [2021-11-13 02:53:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2021-11-13 02:53:21,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:53:21,049 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 20, 20, 11, 11, 11, 11, 11, 10, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:53:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 02:53:21,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-13 02:53:21,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:53:21,449 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:53:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:53:21,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1254673790, now seen corresponding path program 1 times [2021-11-13 02:53:21,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:53:21,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714897698] [2021-11-13 02:53:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:53:21,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:53:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:53:21,455 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:53:21,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2dea974-37e5-43dd-9ef0-6f323efa2f46/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 02:53:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:53:27,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 4077 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 02:53:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates...