./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-amd-amd8111e.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_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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-amd-amd8111e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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_0cacc15b-9eb9-4d4e-b221-27dc287099be/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 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:20:39,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:20:39,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:20:39,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:20:39,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:20:39,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:20:39,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:20:39,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:20:39,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:20:39,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:20:39,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:20:39,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:20:39,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:20:39,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:20:39,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:20:39,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:20:39,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:20:39,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:20:39,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:20:39,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:20:39,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:20:39,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:20:39,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:20:39,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:20:39,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:20:39,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:20:39,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:20:39,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:20:39,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:20:39,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:20:39,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:20:39,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:20:39,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:20:39,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:20:39,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:20:39,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:20:39,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:20:39,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:20:39,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:20:39,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:20:39,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:20:39,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:20:39,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:20:39,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:20:39,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:20:39,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:20:39,385 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:20:39,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:20:39,386 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:20:39,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:20:39,386 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:20:39,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:20:39,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:20:39,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:20:39,388 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:20:39,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:20:39,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:20:39,389 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:20:39,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:20:39,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:20:39,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:20:39,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:20:39,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:20:39,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:20:39,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:20:39,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:20:39,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:20:39,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:20:39,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:20:39,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:20:39,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:39,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:20:39,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:20:39,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:20:39,395 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:20:39,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:20:39,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:20:39,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:20:39,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:20:39,397 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-12 23:20:39,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:20:39,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:20:39,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:20:39,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:20:39,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:20:39,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-12 23:20:39,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/65ca815b1/7ffed2353dbe44c39c08fc28cfc8f779/FLAG5c3818e90 [2021-11-12 23:20:40,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:20:40,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-12 23:20:40,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/65ca815b1/7ffed2353dbe44c39c08fc28cfc8f779/FLAG5c3818e90 [2021-11-12 23:20:41,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/65ca815b1/7ffed2353dbe44c39c08fc28cfc8f779 [2021-11-12 23:20:41,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:20:41,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:20:41,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:41,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:20:41,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:20:41,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:41" (1/1) ... [2021-11-12 23:20:41,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1413fb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:41, skipping insertion in model container [2021-11-12 23:20:41,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:41" (1/1) ... [2021-11-12 23:20:41,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:20:41,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:43,270 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:20:43,438 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:20:43,440 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:20:44,520 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-12 23:20:44,523 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-12 23:20:44,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:44,574 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:20:44,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b2c9a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:44, skipping insertion in model container [2021-11-12 23:20:44,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:44,576 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:20:44,578 INFO L158 Benchmark]: Toolchain (without parser) took 3406.99ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 45.2MB in the beginning and 56.9MB in the end (delta: -11.7MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2021-11-12 23:20:44,578 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 48.0MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:20:44,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3402.75ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 45.0MB in the beginning and 56.9MB in the end (delta: -11.9MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2021-11-12 23:20:44,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 48.0MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3402.75ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 45.0MB in the beginning and 56.9MB in the end (delta: -11.9MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6420]: 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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-amd-amd8111e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/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_0cacc15b-9eb9-4d4e-b221-27dc287099be/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 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:20:46,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:20:46,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:20:46,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:20:46,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:20:46,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:20:46,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:20:46,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:20:46,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:20:46,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:20:46,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:20:46,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:20:46,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:20:46,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:20:47,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:20:47,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:20:47,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:20:47,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:20:47,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:20:47,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:20:47,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:20:47,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:20:47,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:20:47,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:20:47,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:20:47,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:20:47,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:20:47,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:20:47,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:20:47,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:20:47,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:20:47,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:20:47,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:20:47,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:20:47,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:20:47,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:20:47,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:20:47,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:20:47,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:20:47,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:20:47,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:20:47,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:20:47,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:20:47,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:20:47,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:20:47,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:20:47,108 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:20:47,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:20:47,109 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:20:47,109 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:20:47,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:20:47,109 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:20:47,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:20:47,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:20:47,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:20:47,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:20:47,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:20:47,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:20:47,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:20:47,113 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:20:47,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:20:47,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:20:47,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:20:47,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:20:47,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:20:47,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:20:47,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:47,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:20:47,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:20:47,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:20:47,116 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:20:47,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:47,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:20:47,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:20:47,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:20:47,117 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-12 23:20:47,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:20:47,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:20:47,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:20:47,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:20:47,511 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:20:47,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-12 23:20:47,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/49015cbe0/4868e43036284781a3ce03dda4dbb0cb/FLAGe3033f411 [2021-11-12 23:20:48,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:20:48,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-12 23:20:48,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/49015cbe0/4868e43036284781a3ce03dda4dbb0cb/FLAGe3033f411 [2021-11-12 23:20:48,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/data/49015cbe0/4868e43036284781a3ce03dda4dbb0cb [2021-11-12 23:20:48,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:20:48,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:20:48,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:48,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:20:48,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:20:48,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:48" (1/1) ... [2021-11-12 23:20:48,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a11ef62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:48, skipping insertion in model container [2021-11-12 23:20:48,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:48" (1/1) ... [2021-11-12 23:20:48,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:20:49,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:52,112 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-12 23:20:52,114 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-12 23:20:52,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:52,174 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:20:52,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:52,600 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-12 23:20:52,600 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-12 23:20:52,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:52,655 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:20:52,988 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-12 23:20:52,988 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_0cacc15b-9eb9-4d4e-b221-27dc287099be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-12 23:20:52,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:53,291 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:20:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53 WrapperNode [2021-11-12 23:20:53,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:53,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:20:53,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:20:53,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:20:53,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:20:53,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:20:53,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:20:53,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:20:53,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:20:53,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:20:53,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:20:53,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:20:53,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (1/1) ... [2021-11-12 23:20:53,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:20:53,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:20:54,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:20:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:20:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:20:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_stats [2021-11-12 23:20:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_stats [2021-11-12 23:20:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:20:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:20:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-12 23:20:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-12 23:20:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-12 23:20:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-12 23:20:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:20:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:20:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:20:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:20:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_91 [2021-11-12 23:20:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_91 [2021-11-12 23:20:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 23:20:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 23:20:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-12 23:20:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-12 23:20:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:20:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:20:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:20:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:20:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:20:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:20:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:20:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:20:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:20:54,028 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:20:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:20:54,028 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:20:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:20:54,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:20:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-12 23:20:54,029 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-12 23:20:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:20:54,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:20:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:20:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 23:20:54,030 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 23:20:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:20:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:20:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:20:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-12 23:20:54,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-12 23:20:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_tx_timeout [2021-11-12 23:20:54,031 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_tx_timeout [2021-11-12 23:20:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:20:54,031 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:20:54,031 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_read [2021-11-12 23:20:54,032 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_read [2021-11-12 23:20:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_nway_reset [2021-11-12 23:20:54,032 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_nway_reset [2021-11-12 23:20:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:20:54,032 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:20:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_rx_buff_len [2021-11-12 23:20:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_rx_buff_len [2021-11-12 23:20:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_open [2021-11-12 23:20:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_open [2021-11-12 23:20:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:20:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:20:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:20:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:20:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:20:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:20:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:20:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:20:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:20:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:20:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:20:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:20:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:20:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:20:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:20:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:20:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_write_phy [2021-11-12 23:20:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_write_phy [2021-11-12 23:20:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:20:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:20:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:20:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:20:54,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:20:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_phy [2021-11-12 23:20:54,037 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_phy [2021-11-12 23:20:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-12 23:20:54,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-12 23:20:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:20:54,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:20:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:20:54,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:20:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:20:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:20:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:20:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:20:54,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:20:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:20:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:20:54,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:20:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:20:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:20:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-12 23:20:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-12 23:20:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_remove_one [2021-11-12 23:20:54,040 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_remove_one [2021-11-12 23:20:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:20:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:20:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-12 23:20:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-12 23:20:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:20:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:20:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_free_skbs [2021-11-12 23:20:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_free_skbs [2021-11-12 23:20:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:20:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:20:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 23:20:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 23:20:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:20:54,043 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:20:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:20:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-12 23:20:54,043 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-12 23:20:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-12 23:20:54,043 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-12 23:20:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-12 23:20:54,044 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-12 23:20:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:20:54,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:20:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_close [2021-11-12 23:20:54,044 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_close [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:20:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:20:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:20:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:20:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:20:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_write [2021-11-12 23:20:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_write [2021-11-12 23:20:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_mib [2021-11-12 23:20:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_mib [2021-11-12 23:20:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:20:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:20:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_interrupt [2021-11-12 23:20:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_interrupt [2021-11-12 23:20:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:20:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:20:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_coalesce [2021-11-12 23:20:54,048 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_coalesce [2021-11-12 23:20:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:20:54,048 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:20:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 23:20:54,048 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 23:20:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:20:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:20:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-12 23:20:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-12 23:20:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:20:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-12 23:20:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-12 23:20:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:20:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:20:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:20:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_89 [2021-11-12 23:20:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_89 [2021-11-12 23:20:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_disable_interrupt [2021-11-12 23:20:54,051 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_disable_interrupt [2021-11-12 23:20:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-12 23:20:54,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-12 23:20:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:20:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:20:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_multicast_list [2021-11-12 23:20:54,052 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_multicast_list [2021-11-12 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_resume [2021-11-12 23:20:54,052 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_resume [2021-11-12 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:20:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:20:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 23:20:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_restart [2021-11-12 23:20:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_restart [2021-11-12 23:20:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 23:20:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 23:20:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:20:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:20:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:20:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-12 23:20:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-12 23:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:20:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:20:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:20:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_stop_chip [2021-11-12 23:20:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_stop_chip [2021-11-12 23:20:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:20:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:20:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_poll [2021-11-12 23:20:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_poll [2021-11-12 23:20:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_amd8111e_priv [2021-11-12 23:20:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_amd8111e_priv [2021-11-12 23:20:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:20:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:20:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:20:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:20:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_regs_len [2021-11-12 23:20:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_regs_len [2021-11-12 23:20:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 23:20:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 23:20:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_amd8111e_priv [2021-11-12 23:20:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_amd8111e_priv [2021-11-12 23:20:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:20:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:21:00,794 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:21:32,665 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:21:32,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:21:32,879 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:21:32,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:32 BoogieIcfgContainer [2021-11-12 23:21:32,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:21:32,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:21:32,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:21:32,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:21:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:20:48" (1/3) ... [2021-11-12 23:21:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6854df8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:32, skipping insertion in model container [2021-11-12 23:21:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:53" (2/3) ... [2021-11-12 23:21:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6854df8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:32, skipping insertion in model container [2021-11-12 23:21:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:32" (3/3) ... [2021-11-12 23:21:32,892 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-12 23:21:32,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:21:32,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:21:32,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:21:32,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:21:32,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:21:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 1811 states, 1193 states have (on average 1.250628667225482) internal successors, (1492), 1224 states have internal predecessors, (1492), 520 states have call successors, (520), 98 states have call predecessors, (520), 97 states have return successors, (515), 506 states have call predecessors, (515), 515 states have call successors, (515) [2021-11-12 23:21:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-12 23:21:33,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:33,067 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:33,068 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1614588111, now seen corresponding path program 1 times [2021-11-12 23:21:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:33,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43099423] [2021-11-12 23:21:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:33,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:33,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:21:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:35,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:35,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:21:36,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-12 23:21:37,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:37,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43099423] [2021-11-12 23:21:37,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43099423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:37,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:21:37,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051236345] [2021-11-12 23:21:37,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:37,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:21:37,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:21:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:21:37,097 INFO L87 Difference]: Start difference. First operand has 1811 states, 1193 states have (on average 1.250628667225482) internal successors, (1492), 1224 states have internal predecessors, (1492), 520 states have call successors, (520), 98 states have call predecessors, (520), 97 states have return successors, (515), 506 states have call predecessors, (515), 515 states have call successors, (515) Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-12 23:21:39,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:21:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:39,895 INFO L93 Difference]: Finished difference Result 5091 states and 7167 transitions. [2021-11-12 23:21:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:21:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 225 [2021-11-12 23:21:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:39,956 INFO L225 Difference]: With dead ends: 5091 [2021-11-12 23:21:39,956 INFO L226 Difference]: Without dead ends: 3238 [2021-11-12 23:21:39,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:21:39,986 INFO L933 BasicCegarLoop]: 2979 mSDtfsCounter, 2078 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2372.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.66ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2438.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:39,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 5406 Invalid, 77 Unknown, 0 Unchecked, 42.66ms Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2438.36ms Time] [2021-11-12 23:21:40,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2021-11-12 23:21:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3234. [2021-11-12 23:21:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2130 states have (on average 1.2394366197183098) internal successors, (2640), 2188 states have internal predecessors, (2640), 913 states have call successors, (913), 190 states have call predecessors, (913), 190 states have return successors, (916), 893 states have call predecessors, (916), 913 states have call successors, (916) [2021-11-12 23:21:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4469 transitions. [2021-11-12 23:21:40,367 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4469 transitions. Word has length 225 [2021-11-12 23:21:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 4469 transitions. [2021-11-12 23:21:40,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-12 23:21:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4469 transitions. [2021-11-12 23:21:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-12 23:21:40,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:40,387 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:40,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:21:40,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:40,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1259776299, now seen corresponding path program 1 times [2021-11-12 23:21:40,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:40,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317645151] [2021-11-12 23:21:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:40,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:40,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:40,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:21:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:42,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:42,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:21:43,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-12 23:21:44,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:44,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317645151] [2021-11-12 23:21:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317645151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:44,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:44,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:21:44,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868935281] [2021-11-12 23:21:44,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:44,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:21:44,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:21:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:44,261 INFO L87 Difference]: Start difference. First operand 3234 states and 4469 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:21:46,462 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 [] [2021-11-12 23:21:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:53,048 INFO L93 Difference]: Finished difference Result 10138 states and 13933 transitions. [2021-11-12 23:21:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:21:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 218 [2021-11-12 23:21:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:53,120 INFO L225 Difference]: With dead ends: 10138 [2021-11-12 23:21:53,120 INFO L226 Difference]: Without dead ends: 6929 [2021-11-12 23:21:53,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:53,140 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 4306 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7501.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.88ms SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8244.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:53,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 7423 Invalid, 1508 Unknown, 0 Unchecked, 40.88ms Time], IncrementalHoareTripleChecker [452 Valid, 1055 Invalid, 1 Unknown, 0 Unchecked, 8244.38ms Time] [2021-11-12 23:21:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-11-12 23:21:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6921. [2021-11-12 23:21:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6921 states, 4643 states have (on average 1.2435925048460048) internal successors, (5774), 4770 states have internal predecessors, (5774), 1841 states have call successors, (1841), 436 states have call predecessors, (1841), 436 states have return successors, (1844), 1799 states have call predecessors, (1844), 1841 states have call successors, (1844) [2021-11-12 23:21:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 9459 transitions. [2021-11-12 23:21:53,586 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 9459 transitions. Word has length 218 [2021-11-12 23:21:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:53,590 INFO L470 AbstractCegarLoop]: Abstraction has 6921 states and 9459 transitions. [2021-11-12 23:21:53,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:21:53,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 9459 transitions. [2021-11-12 23:21:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-12 23:21:53,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:53,610 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-12 23:21:53,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:53,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash -563004502, now seen corresponding path program 1 times [2021-11-12 23:21:53,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:53,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388007124] [2021-11-12 23:21:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:53,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:53,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:53,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:21:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:56,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-12 23:21:57,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-11-12 23:21:58,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:58,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388007124] [2021-11-12 23:21:58,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388007124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:58,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:58,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:21:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823044409] [2021-11-12 23:21:58,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:58,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:21:58,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:21:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:58,058 INFO L87 Difference]: Start difference. First operand 6921 states and 9459 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2021-11-12 23:22:00,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:05,548 INFO L93 Difference]: Finished difference Result 17845 states and 24393 transitions. [2021-11-12 23:22:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:05,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 305 [2021-11-12 23:22:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:05,632 INFO L225 Difference]: With dead ends: 17845 [2021-11-12 23:22:05,632 INFO L226 Difference]: Without dead ends: 10949 [2021-11-12 23:22:05,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:05,666 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 3916 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6261.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 7623 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.50ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6890.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:05,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3916 Valid, 7623 Invalid, 1105 Unknown, 0 Unchecked, 35.50ms Time], IncrementalHoareTripleChecker [35 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 6890.80ms Time] [2021-11-12 23:22:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2021-11-12 23:22:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 10941. [2021-11-12 23:22:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10941 states, 7401 states have (on average 1.251182272665856) internal successors, (9260), 7611 states have internal predecessors, (9260), 2835 states have call successors, (2835), 704 states have call predecessors, (2835), 704 states have return successors, (2838), 2765 states have call predecessors, (2838), 2835 states have call successors, (2838) [2021-11-12 23:22:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10941 states to 10941 states and 14933 transitions. [2021-11-12 23:22:06,390 INFO L78 Accepts]: Start accepts. Automaton has 10941 states and 14933 transitions. Word has length 305 [2021-11-12 23:22:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 10941 states and 14933 transitions. [2021-11-12 23:22:06,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2021-11-12 23:22:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 10941 states and 14933 transitions. [2021-11-12 23:22:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-12 23:22:06,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:06,412 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:06,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:06,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:06,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1143770181, now seen corresponding path program 1 times [2021-11-12 23:22:06,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:06,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984786360] [2021-11-12 23:22:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:06,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:06,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:06,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:22:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:08,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:08,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2021-11-12 23:22:09,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-11-12 23:22:10,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:10,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984786360] [2021-11-12 23:22:10,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984786360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:10,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:10,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:10,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878041773] [2021-11-12 23:22:10,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:10,778 INFO L87 Difference]: Start difference. First operand 10941 states and 14933 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2021-11-12 23:22:12,966 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 [] [2021-11-12 23:22:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:18,355 INFO L93 Difference]: Finished difference Result 25770 states and 35193 transitions. [2021-11-12 23:22:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) Word has length 390 [2021-11-12 23:22:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:18,472 INFO L225 Difference]: With dead ends: 25770 [2021-11-12 23:22:18,472 INFO L226 Difference]: Without dead ends: 14854 [2021-11-12 23:22:18,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:18,532 INFO L933 BasicCegarLoop]: 4629 mSDtfsCounter, 3937 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 329 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6257.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 7936 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.25ms SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6899.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:18,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3937 Valid, 7936 Invalid, 1404 Unknown, 0 Unchecked, 31.25ms Time], IncrementalHoareTripleChecker [329 Valid, 1074 Invalid, 1 Unknown, 0 Unchecked, 6899.22ms Time] [2021-11-12 23:22:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14854 states. [2021-11-12 23:22:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 14846. [2021-11-12 23:22:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14846 states, 10020 states have (on average 1.2499001996007983) internal successors, (12524), 10299 states have internal predecessors, (12524), 3871 states have call successors, (3871), 954 states have call predecessors, (3871), 954 states have return successors, (3874), 3780 states have call predecessors, (3874), 3871 states have call successors, (3874) [2021-11-12 23:22:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14846 states to 14846 states and 20269 transitions. [2021-11-12 23:22:19,675 INFO L78 Accepts]: Start accepts. Automaton has 14846 states and 20269 transitions. Word has length 390 [2021-11-12 23:22:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:19,676 INFO L470 AbstractCegarLoop]: Abstraction has 14846 states and 20269 transitions. [2021-11-12 23:22:19,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2021-11-12 23:22:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 14846 states and 20269 transitions. [2021-11-12 23:22:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-12 23:22:19,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:19,702 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:19,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:19,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1468456089, now seen corresponding path program 1 times [2021-11-12 23:22:19,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:19,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863225226] [2021-11-12 23:22:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:19,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:19,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:19,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:22:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:22,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:22,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2021-11-12 23:22:23,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2021-11-12 23:22:24,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:24,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863225226] [2021-11-12 23:22:24,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863225226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:24,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:24,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:24,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139676394] [2021-11-12 23:22:24,036 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:24,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:24,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:24,038 INFO L87 Difference]: Start difference. First operand 14846 states and 20269 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 4 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-12 23:22:26,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:30,919 INFO L93 Difference]: Finished difference Result 33157 states and 45225 transitions. [2021-11-12 23:22:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 4 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 392 [2021-11-12 23:22:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:31,009 INFO L225 Difference]: With dead ends: 33157 [2021-11-12 23:22:31,009 INFO L226 Difference]: Without dead ends: 18336 [2021-11-12 23:22:31,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:31,063 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 4161 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5531.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 7994 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.34ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6041.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:31,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 7994 Invalid, 1064 Unknown, 0 Unchecked, 26.34ms Time], IncrementalHoareTripleChecker [34 Valid, 1029 Invalid, 1 Unknown, 0 Unchecked, 6041.76ms Time] [2021-11-12 23:22:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18336 states. [2021-11-12 23:22:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18336 to 18328. [2021-11-12 23:22:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18328 states, 12428 states have (on average 1.250885098165433) internal successors, (15546), 12772 states have internal predecessors, (15546), 4705 states have call successors, (4705), 1194 states have call predecessors, (4705), 1194 states have return successors, (4708), 4593 states have call predecessors, (4708), 4705 states have call successors, (4708) [2021-11-12 23:22:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18328 states to 18328 states and 24959 transitions. [2021-11-12 23:22:32,295 INFO L78 Accepts]: Start accepts. Automaton has 18328 states and 24959 transitions. Word has length 392 [2021-11-12 23:22:32,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:32,301 INFO L470 AbstractCegarLoop]: Abstraction has 18328 states and 24959 transitions. [2021-11-12 23:22:32,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 4 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-12 23:22:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 18328 states and 24959 transitions. [2021-11-12 23:22:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-12 23:22:32,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:32,336 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 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, 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] [2021-11-12 23:22:32,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:32,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:32,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2004255708, now seen corresponding path program 1 times [2021-11-12 23:22:32,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:32,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80176384] [2021-11-12 23:22:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:32,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:32,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:32,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:32,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:22:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:34,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:34,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2021-11-12 23:22:35,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-12 23:22:36,753 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80176384] [2021-11-12 23:22:36,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80176384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:36,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:36,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:36,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851854766] [2021-11-12 23:22:36,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:36,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:36,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:36,757 INFO L87 Difference]: Start difference. First operand 18328 states and 24959 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-12 23:22:38,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:43,975 INFO L93 Difference]: Finished difference Result 39637 states and 54001 transitions. [2021-11-12 23:22:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:43,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 438 [2021-11-12 23:22:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:44,095 INFO L225 Difference]: With dead ends: 39637 [2021-11-12 23:22:44,095 INFO L226 Difference]: Without dead ends: 21334 [2021-11-12 23:22:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 872 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:44,162 INFO L933 BasicCegarLoop]: 4014 mSDtfsCounter, 3956 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5691.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.43ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6219.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:44,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3956 Valid, 7296 Invalid, 1133 Unknown, 0 Unchecked, 23.43ms Time], IncrementalHoareTripleChecker [35 Valid, 1097 Invalid, 1 Unknown, 0 Unchecked, 6219.95ms Time] [2021-11-12 23:22:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21334 states. [2021-11-12 23:22:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21334 to 21326. [2021-11-12 23:22:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21326 states, 14512 states have (on average 1.25303197353914) internal successors, (18184), 14914 states have internal predecessors, (18184), 5433 states have call successors, (5433), 1380 states have call predecessors, (5433), 1380 states have return successors, (5436), 5301 states have call predecessors, (5436), 5433 states have call successors, (5436) [2021-11-12 23:22:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21326 states to 21326 states and 29053 transitions. [2021-11-12 23:22:45,588 INFO L78 Accepts]: Start accepts. Automaton has 21326 states and 29053 transitions. Word has length 438 [2021-11-12 23:22:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:45,589 INFO L470 AbstractCegarLoop]: Abstraction has 21326 states and 29053 transitions. [2021-11-12 23:22:45,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-12 23:22:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 21326 states and 29053 transitions. [2021-11-12 23:22:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-12 23:22:45,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:45,617 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 12, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:45,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:45,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:45,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 564483266, now seen corresponding path program 1 times [2021-11-12 23:22:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:45,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914165307] [2021-11-12 23:22:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:45,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:45,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:45,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:22:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:48,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:22:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-12 23:22:49,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-12 23:22:51,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:51,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914165307] [2021-11-12 23:22:51,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914165307] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:51,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:51,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 16 [2021-11-12 23:22:51,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905170846] [2021-11-12 23:22:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:22:51,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:22:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:22:51,415 INFO L87 Difference]: Start difference. First operand 21326 states and 29053 transitions. Second operand has 12 states, 11 states have (on average 17.181818181818183) internal successors, (189), 11 states have internal predecessors, (189), 5 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-11-12 23:22:53,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:09,034 INFO L93 Difference]: Finished difference Result 69271 states and 94796 transitions. [2021-11-12 23:23:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:23:09,035 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 17.181818181818183) internal successors, (189), 11 states have internal predecessors, (189), 5 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) Word has length 447 [2021-11-12 23:23:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:09,296 INFO L225 Difference]: With dead ends: 69271 [2021-11-12 23:23:09,296 INFO L226 Difference]: Without dead ends: 47968 [2021-11-12 23:23:09,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2021-11-12 23:23:09,565 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 6009 mSDsluCounter, 37542 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 1196 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13136.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6042 SdHoareTripleChecker+Valid, 42263 SdHoareTripleChecker+Invalid, 4663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 117.56ms SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14352.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:09,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6042 Valid, 42263 Invalid, 4663 Unknown, 0 Unchecked, 117.56ms Time], IncrementalHoareTripleChecker [1196 Valid, 3466 Invalid, 1 Unknown, 0 Unchecked, 14352.60ms Time] [2021-11-12 23:23:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47968 states. [2021-11-12 23:23:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47968 to 41632. [2021-11-12 23:23:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41632 states, 28280 states have (on average 1.2525106082036774) internal successors, (35421), 29074 states have internal predecessors, (35421), 10628 states have call successors, (10628), 2723 states have call predecessors, (10628), 2723 states have return successors, (10634), 10361 states have call predecessors, (10634), 10628 states have call successors, (10634) [2021-11-12 23:23:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41632 states to 41632 states and 56683 transitions. [2021-11-12 23:23:12,767 INFO L78 Accepts]: Start accepts. Automaton has 41632 states and 56683 transitions. Word has length 447 [2021-11-12 23:23:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:12,769 INFO L470 AbstractCegarLoop]: Abstraction has 41632 states and 56683 transitions. [2021-11-12 23:23:12,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 17.181818181818183) internal successors, (189), 11 states have internal predecessors, (189), 5 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-11-12 23:23:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 41632 states and 56683 transitions. [2021-11-12 23:23:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-12 23:23:12,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:12,825 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 12, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:12,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:13,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:13,049 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:13,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash -503940985, now seen corresponding path program 1 times [2021-11-12 23:23:13,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:13,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170208019] [2021-11-12 23:23:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:13,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:13,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:13,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:13,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:23:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:15,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:23:15,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-12 23:23:17,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-12 23:23:19,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:19,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170208019] [2021-11-12 23:23:19,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170208019] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:19,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:19,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-12 23:23:19,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956964111] [2021-11-12 23:23:19,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:19,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:23:19,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:23:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:23:19,281 INFO L87 Difference]: Start difference. First operand 41632 states and 56683 transitions. Second operand has 13 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2021-11-12 23:23:21,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:23,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:25,469 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 [] [2021-11-12 23:23:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:40,615 INFO L93 Difference]: Finished difference Result 109845 states and 150014 transitions. [2021-11-12 23:23:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 23:23:40,617 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) Word has length 453 [2021-11-12 23:23:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:41,148 INFO L225 Difference]: With dead ends: 109845 [2021-11-12 23:23:41,148 INFO L226 Difference]: Without dead ends: 68236 [2021-11-12 23:23:41,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2021-11-12 23:23:41,288 INFO L933 BasicCegarLoop]: 4119 mSDtfsCounter, 6209 mSDsluCounter, 39750 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 1570 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15312.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6229 SdHoareTripleChecker+Valid, 43869 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.44ms SdHoareTripleChecker+Time, 1570 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16370.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:41,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6229 Valid, 43869 Invalid, 4739 Unknown, 0 Unchecked, 87.44ms Time], IncrementalHoareTripleChecker [1570 Valid, 3166 Invalid, 3 Unknown, 0 Unchecked, 16370.33ms Time] [2021-11-12 23:23:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68236 states. [2021-11-12 23:23:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68236 to 41638. [2021-11-12 23:23:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41638 states, 28282 states have (on average 1.252492751573439) internal successors, (35423), 29078 states have internal predecessors, (35423), 10632 states have call successors, (10632), 2723 states have call predecessors, (10632), 2723 states have return successors, (10638), 10365 states have call predecessors, (10638), 10632 states have call successors, (10638) [2021-11-12 23:23:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41638 states to 41638 states and 56693 transitions. [2021-11-12 23:23:45,276 INFO L78 Accepts]: Start accepts. Automaton has 41638 states and 56693 transitions. Word has length 453 [2021-11-12 23:23:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:45,279 INFO L470 AbstractCegarLoop]: Abstraction has 41638 states and 56693 transitions. [2021-11-12 23:23:45,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2021-11-12 23:23:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 41638 states and 56693 transitions. [2021-11-12 23:23:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-12 23:23:45,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:45,334 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 12, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:45,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:45,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:45,557 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash -100721044, now seen corresponding path program 1 times [2021-11-12 23:23:45,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:45,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878545882] [2021-11-12 23:23:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:45,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:45,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:45,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:23:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:48,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:23:48,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-12 23:23:49,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-12 23:23:51,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:51,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878545882] [2021-11-12 23:23:51,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878545882] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:51,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:51,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 17 [2021-11-12 23:23:51,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742180062] [2021-11-12 23:23:51,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:51,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:23:51,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:23:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:23:51,625 INFO L87 Difference]: Start difference. First operand 41638 states and 56693 transitions. Second operand has 13 states, 12 states have (on average 16.25) internal successors, (195), 12 states have internal predecessors, (195), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2021-11-12 23:23:53,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:14,257 INFO L93 Difference]: Finished difference Result 109929 states and 150122 transitions. [2021-11-12 23:24:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 23:24:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 16.25) internal successors, (195), 12 states have internal predecessors, (195), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) Word has length 455 [2021-11-12 23:24:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:14,622 INFO L225 Difference]: With dead ends: 109929 [2021-11-12 23:24:14,622 INFO L226 Difference]: Without dead ends: 68314 [2021-11-12 23:24:14,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2021-11-12 23:24:14,803 INFO L933 BasicCegarLoop]: 3559 mSDtfsCounter, 6357 mSDsluCounter, 34131 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 1563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14883.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6394 SdHoareTripleChecker+Valid, 37690 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.65ms SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16254.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:14,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6394 Valid, 37690 Invalid, 5080 Unknown, 0 Unchecked, 106.65ms Time], IncrementalHoareTripleChecker [1563 Valid, 3516 Invalid, 1 Unknown, 0 Unchecked, 16254.63ms Time] [2021-11-12 23:24:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68314 states. [2021-11-12 23:24:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68314 to 41632. [2021-11-12 23:24:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41632 states, 28280 states have (on average 1.2525106082036774) internal successors, (35421), 29074 states have internal predecessors, (35421), 10628 states have call successors, (10628), 2723 states have call predecessors, (10628), 2723 states have return successors, (10634), 10361 states have call predecessors, (10634), 10628 states have call successors, (10634) [2021-11-12 23:24:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41632 states to 41632 states and 56683 transitions. [2021-11-12 23:24:18,920 INFO L78 Accepts]: Start accepts. Automaton has 41632 states and 56683 transitions. Word has length 455 [2021-11-12 23:24:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:18,922 INFO L470 AbstractCegarLoop]: Abstraction has 41632 states and 56683 transitions. [2021-11-12 23:24:18,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 16.25) internal successors, (195), 12 states have internal predecessors, (195), 6 states have call successors, (53), 3 states have call predecessors, (53), 5 states have return successors, (48), 6 states have call predecessors, (48), 6 states have call successors, (48) [2021-11-12 23:24:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 41632 states and 56683 transitions. [2021-11-12 23:24:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-12 23:24:18,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:18,958 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-12 23:24:19,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:19,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:19,173 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash -200886892, now seen corresponding path program 1 times [2021-11-12 23:24:19,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:19,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229064502] [2021-11-12 23:24:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:19,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:19,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:19,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:19,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:24:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:22,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2021-11-12 23:24:23,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2021-11-12 23:24:24,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:24,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229064502] [2021-11-12 23:24:24,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229064502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:24,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:24,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:24:24,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920652706] [2021-11-12 23:24:24,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:24,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:24,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:24,615 INFO L87 Difference]: Start difference. First operand 41632 states and 56683 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-12 23:24:26,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:34,120 INFO L93 Difference]: Finished difference Result 74254 states and 101190 transitions. [2021-11-12 23:24:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:34,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 460 [2021-11-12 23:24:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:34,241 INFO L225 Difference]: With dead ends: 74254 [2021-11-12 23:24:34,241 INFO L226 Difference]: Without dead ends: 32619 [2021-11-12 23:24:34,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:34,347 INFO L933 BasicCegarLoop]: 4298 mSDtfsCounter, 3932 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6136.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.66ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6715.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:34,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3932 Valid, 7621 Invalid, 1122 Unknown, 0 Unchecked, 24.66ms Time], IncrementalHoareTripleChecker [36 Valid, 1085 Invalid, 1 Unknown, 0 Unchecked, 6715.63ms Time] [2021-11-12 23:24:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32619 states. [2021-11-12 23:24:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32619 to 32609. [2021-11-12 23:24:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32609 states, 22289 states have (on average 1.2551931446004756) internal successors, (27977), 22906 states have internal predecessors, (27977), 8246 states have call successors, (8246), 2073 states have call predecessors, (8246), 2073 states have return successors, (8249), 8040 states have call predecessors, (8249), 8246 states have call successors, (8249) [2021-11-12 23:24:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32609 states to 32609 states and 44472 transitions. [2021-11-12 23:24:37,391 INFO L78 Accepts]: Start accepts. Automaton has 32609 states and 44472 transitions. Word has length 460 [2021-11-12 23:24:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:37,392 INFO L470 AbstractCegarLoop]: Abstraction has 32609 states and 44472 transitions. [2021-11-12 23:24:37,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-12 23:24:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 32609 states and 44472 transitions. [2021-11-12 23:24:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-11-12 23:24:37,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:37,435 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 15, 15, 15, 12, 12, 12, 12, 12, 12, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:37,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:37,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:37,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash 218508022, now seen corresponding path program 1 times [2021-11-12 23:24:37,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:37,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446727577] [2021-11-12 23:24:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:37,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:37,645 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:37,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:24:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:24:40,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2021-11-12 23:24:42,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2021-11-12 23:24:44,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:44,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446727577] [2021-11-12 23:24:44,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446727577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:44,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:44,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:24:44,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362815505] [2021-11-12 23:24:44,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:44,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:24:44,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:24:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:24:44,064 INFO L87 Difference]: Start difference. First operand 32609 states and 44472 transitions. Second operand has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-12 23:24:47,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:52,013 INFO L93 Difference]: Finished difference Result 72422 states and 99265 transitions. [2021-11-12 23:24:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:24:52,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 573 [2021-11-12 23:24:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:52,162 INFO L225 Difference]: With dead ends: 72422 [2021-11-12 23:24:52,162 INFO L226 Difference]: Without dead ends: 39859 [2021-11-12 23:24:52,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:24:52,377 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 2867 mSDsluCounter, 12118 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 738 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4052.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 15273 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.22ms SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4354.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:52,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 15273 Invalid, 860 Unknown, 0 Unchecked, 28.22ms Time], IncrementalHoareTripleChecker [738 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 4354.82ms Time] [2021-11-12 23:24:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39859 states. [2021-11-12 23:24:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39859 to 32615. [2021-11-12 23:24:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32615 states, 22295 states have (on average 1.2551244673693653) internal successors, (27983), 22912 states have internal predecessors, (27983), 8246 states have call successors, (8246), 2073 states have call predecessors, (8246), 2073 states have return successors, (8249), 8040 states have call predecessors, (8249), 8246 states have call successors, (8249) [2021-11-12 23:24:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32615 states to 32615 states and 44478 transitions. [2021-11-12 23:24:55,147 INFO L78 Accepts]: Start accepts. Automaton has 32615 states and 44478 transitions. Word has length 573 [2021-11-12 23:24:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:55,149 INFO L470 AbstractCegarLoop]: Abstraction has 32615 states and 44478 transitions. [2021-11-12 23:24:55,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-12 23:24:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 32615 states and 44478 transitions. [2021-11-12 23:24:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2021-11-12 23:24:55,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:55,204 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 17, 17, 17, 12, 12, 12, 12, 12, 12, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:55,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:55,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:55,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1709011551, now seen corresponding path program 1 times [2021-11-12 23:24:55,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:55,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650899933] [2021-11-12 23:24:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:55,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:55,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:55,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:24:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:59,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:24:59,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-12 23:25:00,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2021-11-12 23:25:02,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:02,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650899933] [2021-11-12 23:25:02,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650899933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:02,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:02,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 23:25:02,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977442423] [2021-11-12 23:25:02,631 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:02,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:25:02,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:25:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:25:02,634 INFO L87 Difference]: Start difference. First operand 32615 states and 44478 transitions. Second operand has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 10 states have internal predecessors, (287), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (97), 4 states have call predecessors, (97), 2 states have call successors, (97) [2021-11-12 23:25:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:06,687 INFO L93 Difference]: Finished difference Result 67722 states and 92526 transitions. [2021-11-12 23:25:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:25:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 10 states have internal predecessors, (287), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (97), 4 states have call predecessors, (97), 2 states have call successors, (97) Word has length 594 [2021-11-12 23:25:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:06,869 INFO L225 Difference]: With dead ends: 67722 [2021-11-12 23:25:06,869 INFO L226 Difference]: Without dead ends: 35153 [2021-11-12 23:25:06,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1177 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:25:06,951 INFO L933 BasicCegarLoop]: 2989 mSDtfsCounter, 1386 mSDsluCounter, 20028 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 509.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 23017 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.62ms SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 612.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:06,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 23017 Invalid, 443 Unknown, 0 Unchecked, 40.62ms Time], IncrementalHoareTripleChecker [400 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 612.79ms Time] [2021-11-12 23:25:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-12 23:25:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 32631. [2021-11-12 23:25:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32631 states, 22307 states have (on average 1.2549872237414263) internal successors, (27995), 22926 states have internal predecessors, (27995), 8246 states have call successors, (8246), 2073 states have call predecessors, (8246), 2077 states have return successors, (8261), 8042 states have call predecessors, (8261), 8246 states have call successors, (8261) [2021-11-12 23:25:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32631 states to 32631 states and 44502 transitions. [2021-11-12 23:25:10,491 INFO L78 Accepts]: Start accepts. Automaton has 32631 states and 44502 transitions. Word has length 594 [2021-11-12 23:25:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:10,493 INFO L470 AbstractCegarLoop]: Abstraction has 32631 states and 44502 transitions. [2021-11-12 23:25:10,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 10 states have internal predecessors, (287), 2 states have call successors, (100), 2 states have call predecessors, (100), 4 states have return successors, (97), 4 states have call predecessors, (97), 2 states have call successors, (97) [2021-11-12 23:25:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 32631 states and 44502 transitions. [2021-11-12 23:25:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-12 23:25:10,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:10,555 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 12, 12, 12, 12, 12, 11, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:10,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:10,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:10,781 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2013191931, now seen corresponding path program 1 times [2021-11-12 23:25:10,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:10,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980480384] [2021-11-12 23:25:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:10,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:10,790 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:25:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:14,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2021-11-12 23:25:16,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2021-11-12 23:25:17,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:17,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980480384] [2021-11-12 23:25:17,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980480384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:17,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:17,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:25:17,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656639632] [2021-11-12 23:25:17,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:17,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:17,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:17,787 INFO L87 Difference]: Start difference. First operand 32631 states and 44502 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2021-11-12 23:25:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:20,727 INFO L93 Difference]: Finished difference Result 65232 states and 88971 transitions. [2021-11-12 23:25:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 610 [2021-11-12 23:25:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:20,911 INFO L225 Difference]: With dead ends: 65232 [2021-11-12 23:25:20,912 INFO L226 Difference]: Without dead ends: 32647 [2021-11-12 23:25:20,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:21,000 INFO L933 BasicCegarLoop]: 2452 mSDtfsCounter, 4 mSDsluCounter, 4898 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7350 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:21,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7350 Invalid, 13 Unknown, 0 Unchecked, 12.97ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 132.98ms Time] [2021-11-12 23:25:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32647 states. [2021-11-12 23:25:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32647 to 32647. [2021-11-12 23:25:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32647 states, 22323 states have (on average 1.2548044617658918) internal successors, (28011), 22942 states have internal predecessors, (28011), 8246 states have call successors, (8246), 2073 states have call predecessors, (8246), 2077 states have return successors, (8261), 8042 states have call predecessors, (8261), 8246 states have call successors, (8261) [2021-11-12 23:25:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32647 states to 32647 states and 44518 transitions. [2021-11-12 23:25:23,969 INFO L78 Accepts]: Start accepts. Automaton has 32647 states and 44518 transitions. Word has length 610 [2021-11-12 23:25:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:23,970 INFO L470 AbstractCegarLoop]: Abstraction has 32647 states and 44518 transitions. [2021-11-12 23:25:23,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2021-11-12 23:25:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32647 states and 44518 transitions. [2021-11-12 23:25:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2021-11-12 23:25:24,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:24,014 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 12, 12, 12, 12, 12, 11, 9, 9, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:24,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 23:25:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,215 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1266152709, now seen corresponding path program 1 times [2021-11-12 23:25:24,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:24,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403119434] [2021-11-12 23:25:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:24,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:24,221 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:24,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:25:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:25:28,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2046 backedges. 583 proven. 5 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2021-11-12 23:25:29,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2046 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2021-11-12 23:25:31,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:31,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403119434] [2021-11-12 23:25:31,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403119434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:31,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952193453] [2021-11-12 23:25:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:31,617 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:31,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:31,618 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:31,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 23:25:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:33,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2046 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-12 23:25:35,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2046 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2021-11-12 23:25:37,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1952193453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:37,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:25:37,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-12 23:25:37,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233567894] [2021-11-12 23:25:37,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:37,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:37,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:25:37,119 INFO L87 Difference]: Start difference. First operand 32647 states and 44518 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 3 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (89), 3 states have call predecessors, (89), 3 states have call successors, (89) [2021-11-12 23:25:39,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:42,658 INFO L93 Difference]: Finished difference Result 75916 states and 103537 transitions. [2021-11-12 23:25:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:42,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 3 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (89), 3 states have call predecessors, (89), 3 states have call successors, (89) Word has length 616 [2021-11-12 23:25:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:42,853 INFO L225 Difference]: With dead ends: 75916 [2021-11-12 23:25:42,853 INFO L226 Difference]: Without dead ends: 43315 [2021-11-12 23:25:42,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2460 GetRequests, 2453 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:25:42,964 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 2009 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2418.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 6849 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.73ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2494.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:42,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 6849 Invalid, 75 Unknown, 0 Unchecked, 17.73ms Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2494.13ms Time] [2021-11-12 23:25:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43315 states. [2021-11-12 23:25:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43315 to 43309. [2021-11-12 23:25:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43309 states, 29886 states have (on average 1.2624305694974236) internal successors, (37729), 30727 states have internal predecessors, (37729), 10623 states have call successors, (10623), 2793 states have call predecessors, (10623), 2799 states have return successors, (10647), 10331 states have call predecessors, (10647), 10623 states have call successors, (10647) [2021-11-12 23:25:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43309 states to 43309 states and 58999 transitions. [2021-11-12 23:25:46,988 INFO L78 Accepts]: Start accepts. Automaton has 43309 states and 58999 transitions. Word has length 616 [2021-11-12 23:25:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:46,989 INFO L470 AbstractCegarLoop]: Abstraction has 43309 states and 58999 transitions. [2021-11-12 23:25:46,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 3 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (89), 3 states have call predecessors, (89), 3 states have call successors, (89) [2021-11-12 23:25:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 43309 states and 58999 transitions. [2021-11-12 23:25:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-12 23:25:47,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:47,045 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 19, 19, 19, 12, 12, 12, 12, 12, 11, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:47,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:47,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:47,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:47,454 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -230395937, now seen corresponding path program 1 times [2021-11-12 23:25:47,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:47,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912416106] [2021-11-12 23:25:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:47,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:47,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:47,459 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:47,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:25:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:51,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:25:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 703 proven. 5 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2021-11-12 23:25:53,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 68 proven. 5 refuted. 0 times theorem prover too weak. 2095 trivial. 0 not checked. [2021-11-12 23:25:54,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:54,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912416106] [2021-11-12 23:25:54,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912416106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:54,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1696721640] [2021-11-12 23:25:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:54,708 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:54,709 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:54,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:25:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:57,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:57,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2168 trivial. 0 not checked. [2021-11-12 23:26:01,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2168 trivial. 0 not checked. [2021-11-12 23:26:04,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1696721640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:04,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:26:04,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-12 23:26:04,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895434334] [2021-11-12 23:26:04,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:04,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:26:04,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:26:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:26:04,181 INFO L87 Difference]: Start difference. First operand 43309 states and 58999 transitions. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 3 states have call successors, (134), 3 states have call predecessors, (134), 4 states have return successors, (124), 4 states have call predecessors, (124), 3 states have call successors, (124) [2021-11-12 23:26:06,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:14,690 INFO L93 Difference]: Finished difference Result 86572 states and 118121 transitions. [2021-11-12 23:26:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:14,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 3 states have call successors, (134), 3 states have call predecessors, (134), 4 states have return successors, (124), 4 states have call predecessors, (124), 3 states have call successors, (124) Word has length 622 [2021-11-12 23:26:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:14,931 INFO L225 Difference]: With dead ends: 86572 [2021-11-12 23:26:14,931 INFO L226 Difference]: Without dead ends: 43309 [2021-11-12 23:26:15,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2484 GetRequests, 2475 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:26:15,103 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 2173 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6287.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.01ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6895.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:15,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2173 Valid, 3911 Invalid, 1077 Unknown, 0 Unchecked, 21.01ms Time], IncrementalHoareTripleChecker [80 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 6895.36ms Time] [2021-11-12 23:26:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43309 states. [2021-11-12 23:26:19,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43309 to 43309. [2021-11-12 23:26:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43309 states, 29886 states have (on average 1.2614602154855117) internal successors, (37700), 30727 states have internal predecessors, (37700), 10623 states have call successors, (10623), 2793 states have call predecessors, (10623), 2799 states have return successors, (10647), 10331 states have call predecessors, (10647), 10623 states have call successors, (10647) [2021-11-12 23:26:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43309 states to 43309 states and 58970 transitions. [2021-11-12 23:26:19,292 INFO L78 Accepts]: Start accepts. Automaton has 43309 states and 58970 transitions. Word has length 622 [2021-11-12 23:26:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:19,294 INFO L470 AbstractCegarLoop]: Abstraction has 43309 states and 58970 transitions. [2021-11-12 23:26:19,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 3 states have call successors, (134), 3 states have call predecessors, (134), 4 states have return successors, (124), 4 states have call predecessors, (124), 3 states have call successors, (124) [2021-11-12 23:26:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 43309 states and 58970 transitions. [2021-11-12 23:26:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2021-11-12 23:26:19,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:19,355 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 19, 19, 19, 12, 12, 12, 12, 12, 11, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:19,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-12 23:26:19,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-12 23:26:19,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:19,756 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash -611734031, now seen corresponding path program 1 times [2021-11-12 23:26:19,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:19,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937811099] [2021-11-12 23:26:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:19,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:19,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:19,761 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:19,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:26:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:23,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:26:23,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 703 proven. 5 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2021-11-12 23:26:25,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 68 proven. 5 refuted. 0 times theorem prover too weak. 2095 trivial. 0 not checked. [2021-11-12 23:26:27,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:27,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937811099] [2021-11-12 23:26:27,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937811099] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:27,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2113326823] [2021-11-12 23:26:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:27,243 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:27,245 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cacc15b-9eb9-4d4e-b221-27dc287099be/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:26:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:29,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:26:29,326 INFO L286 TraceCheckSpWp]: Computing forward predicates...