./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:18:54,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:18:54,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:18:54,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:18:54,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:18:54,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:18:54,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:18:54,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:18:54,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:18:54,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:18:54,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:18:54,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:18:54,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:18:54,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:18:54,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:18:54,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:18:54,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:18:54,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:18:54,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:18:54,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:18:54,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:18:54,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:18:54,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:18:54,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:18:54,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:18:54,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:18:54,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:18:54,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:18:54,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:18:54,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:18:54,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:18:54,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:18:54,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:18:54,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:18:54,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:18:54,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:18:54,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:18:54,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:18:54,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:18:54,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:18:54,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:18:54,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:18:54,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:18:54,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:18:54,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:18:54,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:18:54,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:18:54,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:18:54,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:18:54,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:18:54,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:18:54,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:18:54,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:18:54,749 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:18:54,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:18:54,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:18:54,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:18:54,750 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:18:54,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:18:54,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:18:54,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:18:54,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:18:54,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:18:54,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:18:54,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:18:54,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:18:54,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:18:54,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:18:54,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:18:54,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:18:54,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:18:54,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:18:54,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:18:54,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:18:54,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:18:54,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:18:54,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:18:54,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:18:54,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:18:54,758 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-19 14:18:55,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:18:55,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:18:55,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:18:55,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:18:55,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:18:55,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-19 14:18:55,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/a6f86363a/e21717356b844ec0aeefd40476350201/FLAG3dc55b475 [2021-11-19 14:18:56,115 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:18:56,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-19 14:18:56,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/a6f86363a/e21717356b844ec0aeefd40476350201/FLAG3dc55b475 [2021-11-19 14:18:56,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/a6f86363a/e21717356b844ec0aeefd40476350201 [2021-11-19 14:18:56,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:18:56,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:18:56,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:18:56,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:18:56,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:18:56,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:18:56" (1/1) ... [2021-11-19 14:18:56,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c7a78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:56, skipping insertion in model container [2021-11-19 14:18:56,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:18:56" (1/1) ... [2021-11-19 14:18:56,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:18:56,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:18:58,404 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:18:58,557 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:18:58,558 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:18:59,717 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-19 14:18:59,719 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-19 14:18:59,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:18:59,775 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) [2021-11-19 14:18:59,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47e27984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:18:59, skipping insertion in model container [2021-11-19 14:18:59,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:18:59,776 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:18:59,779 INFO L158 Benchmark]: Toolchain (without parser) took 3288.06ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.6MB in the beginning and 66.5MB in the end (delta: 105.0kB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-11-19 14:18:59,779 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:18:59,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3285.13ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.3MB in the beginning and 66.5MB in the end (delta: -192.8kB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-11-19 14:18:59,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3285.13ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.3MB in the beginning and 66.5MB in the end (delta: -192.8kB). Peak memory consumption was 59.2MB. 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:19:02,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:19:02,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:19:02,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:19:02,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:19:02,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:19:02,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:19:02,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:19:02,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:19:02,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:19:02,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:19:02,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:19:02,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:19:02,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:19:02,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:19:02,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:19:02,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:19:02,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:19:02,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:19:02,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:19:02,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:19:02,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:19:02,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:19:02,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:19:02,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:19:02,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:19:02,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:19:02,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:19:02,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:19:02,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:19:02,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:19:02,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:19:02,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:19:02,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:19:02,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:19:02,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:19:02,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:19:02,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:19:02,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:19:02,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:19:02,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:19:02,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:19:02,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:19:02,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:19:02,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:19:02,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:19:02,314 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:19:02,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:19:02,314 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:19:02,314 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:19:02,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:19:02,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:19:02,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:19:02,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:19:02,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:19:02,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:19:02,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:19:02,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:19:02,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:19:02,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:19:02,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:19:02,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:19:02,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:19:02,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:19:02,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:19:02,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:19:02,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:19:02,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:19:02,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:19:02,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:19:02,321 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:19:02,322 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:19:02,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:19:02,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:19:02,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:19:02,323 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-19 14:19:02,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:19:02,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:19:02,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:19:02,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:19:02,721 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:19:02,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-19 14:19:02,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/06f03711c/8bec0669e71d4d4dba70cc94b0babc26/FLAG4853c5621 [2021-11-19 14:19:03,870 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:19:03,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-19 14:19:03,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/06f03711c/8bec0669e71d4d4dba70cc94b0babc26/FLAG4853c5621 [2021-11-19 14:19:04,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/data/06f03711c/8bec0669e71d4d4dba70cc94b0babc26 [2021-11-19 14:19:04,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:19:04,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:19:04,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:04,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:19:04,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:19:04,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:04" (1/1) ... [2021-11-19 14:19:04,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7c946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:04, skipping insertion in model container [2021-11-19 14:19:04,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:04" (1/1) ... [2021-11-19 14:19:04,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:19:04,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:19:07,524 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-19 14:19:07,527 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-19 14:19:07,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:07,619 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:19:07,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:19:08,067 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-19 14:19:08,068 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-19 14:19:08,104 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:08,138 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:19:08,557 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335455,335468] [2021-11-19 14:19:08,557 WARN L230 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_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i[335600,335613] [2021-11-19 14:19:08,563 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:08,956 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:19:08,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08 WrapperNode [2021-11-19 14:19:08,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:08,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:19:08,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:19:08,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:19:08,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,332 INFO L137 Inliner]: procedures = 468, calls = 1901, calls flagged for inlining = 226, calls inlined = 205, statements flattened = 4487 [2021-11-19 14:19:09,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:19:09,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:19:09,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:19:09,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:19:09,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:19:09,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:19:09,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:19:09,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:19:09,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (1/1) ... [2021-11-19 14:19:09,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:19:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:19:09,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:19:09,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:19:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 14:19:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 14:19:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_stats [2021-11-19 14:19:09,795 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_stats [2021-11-19 14:19:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:19:09,795 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:19:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 14:19:09,796 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 14:19:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-19 14:19:09,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-19 14:19:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:19:09,796 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:19:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:19:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:19:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_91 [2021-11-19 14:19:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_91 [2021-11-19 14:19:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 14:19:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 14:19:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 14:19:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 14:19:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:19:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:19:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:19:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:19:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 14:19:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 14:19:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:19:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:19:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:19:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:19:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:19:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:19:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:19:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:19:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-19 14:19:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-19 14:19:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 14:19:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 14:19:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:19:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 14:19:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 14:19:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:19:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:19:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:19:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-19 14:19:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-19 14:19:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_tx_timeout [2021-11-19 14:19:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_tx_timeout [2021-11-19 14:19:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:19:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:19:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_read [2021-11-19 14:19:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_read [2021-11-19 14:19:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_nway_reset [2021-11-19 14:19:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_nway_reset [2021-11-19 14:19:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:19:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:19:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_rx_buff_len [2021-11-19 14:19:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_rx_buff_len [2021-11-19 14:19:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_open [2021-11-19 14:19:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_open [2021-11-19 14:19:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:19:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:19:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:19:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:19:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 14:19:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 14:19:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:19:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:19:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:19:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:19:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 14:19:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 14:19:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:19:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:19:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 14:19:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 14:19:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_write_phy [2021-11-19 14:19:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_write_phy [2021-11-19 14:19:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:19:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:19:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:19:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:19:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:19:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_phy [2021-11-19 14:19:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_phy [2021-11-19 14:19:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-19 14:19:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-19 14:19:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:19:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:19:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:19:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:19:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:19:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:19:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:19:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:19:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:19:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:19:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:19:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:19:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:19:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 14:19:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 14:19:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-19 14:19:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-19 14:19:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_remove_one [2021-11-19 14:19:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_remove_one [2021-11-19 14:19:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:19:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:19:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 14:19:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 14:19:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:19:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:19:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_free_skbs [2021-11-19 14:19:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_free_skbs [2021-11-19 14:19:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:19:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:19:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-19 14:19:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-19 14:19:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:19:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:19:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:19:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-19 14:19:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-19 14:19:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-19 14:19:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-19 14:19:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-19 14:19:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-19 14:19:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:19:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:19:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_close [2021-11-19 14:19:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_close [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:19:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:19:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:19:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:19:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:19:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:19:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_write [2021-11-19 14:19:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_write [2021-11-19 14:19:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_mib [2021-11-19 14:19:09,818 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_mib [2021-11-19 14:19:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 14:19:09,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 14:19:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_interrupt [2021-11-19 14:19:09,818 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_interrupt [2021-11-19 14:19:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 14:19:09,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 14:19:09,819 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_coalesce [2021-11-19 14:19:09,819 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_coalesce [2021-11-19 14:19:09,819 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:19:09,819 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:19:09,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 14:19:09,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 14:19:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:19:09,820 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:19:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 14:19:09,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 14:19:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:19:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 14:19:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 14:19:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:19:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:19:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:19:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_89 [2021-11-19 14:19:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_89 [2021-11-19 14:19:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_disable_interrupt [2021-11-19 14:19:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_disable_interrupt [2021-11-19 14:19:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-19 14:19:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-19 14:19:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:19:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:19:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_multicast_list [2021-11-19 14:19:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_multicast_list [2021-11-19 14:19:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:19:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:19:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:19:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_resume [2021-11-19 14:19:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_resume [2021-11-19 14:19:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:19:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:19:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:19:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:19:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 14:19:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 14:19:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_restart [2021-11-19 14:19:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_restart [2021-11-19 14:19:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 14:19:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 14:19:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:19:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:19:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:19:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:19:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-19 14:19:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:19:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:19:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:19:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:19:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_stop_chip [2021-11-19 14:19:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_stop_chip [2021-11-19 14:19:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:19:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:19:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_poll [2021-11-19 14:19:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_poll [2021-11-19 14:19:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_amd8111e_priv [2021-11-19 14:19:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_amd8111e_priv [2021-11-19 14:19:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:19:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:19:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 14:19:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 14:19:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_regs_len [2021-11-19 14:19:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_regs_len [2021-11-19 14:19:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-19 14:19:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-19 14:19:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_amd8111e_priv [2021-11-19 14:19:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_amd8111e_priv [2021-11-19 14:19:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:19:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:19:10,788 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:19:10,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:19:18,003 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:19:49,711 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:19:49,992 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:19:50,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:19:50,044 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:19:50,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:19:50 BoogieIcfgContainer [2021-11-19 14:19:50,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:19:50,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:19:50,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:19:50,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:19:50,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:19:04" (1/3) ... [2021-11-19 14:19:50,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bd463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:19:50, skipping insertion in model container [2021-11-19 14:19:50,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:08" (2/3) ... [2021-11-19 14:19:50,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bd463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:19:50, skipping insertion in model container [2021-11-19 14:19:50,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:19:50" (3/3) ... [2021-11-19 14:19:50,071 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-19 14:19:50,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:19:50,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:19:50,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:19:50,176 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 [2021-11-19 14:19:50,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:19:50,305 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) [2021-11-19 14:19:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-19 14:19:50,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:50,359 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] [2021-11-19 14:19:50,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1614588111, now seen corresponding path program 1 times [2021-11-19 14:19:50,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:50,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372052428] [2021-11-19 14:19:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:50,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:50,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:50,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:19:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:52,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 14:19:53,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-19 14:19:53,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:53,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372052428] [2021-11-19 14:19:53,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372052428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:53,888 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:53,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:19:53,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90997276] [2021-11-19 14:19:53,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:53,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:19:53,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:19:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:19:53,962 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) [2021-11-19 14:19:56,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:56,963 INFO L93 Difference]: Finished difference Result 5091 states and 7167 transitions. [2021-11-19 14:19:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:19:56,967 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 [2021-11-19 14:19:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:57,035 INFO L225 Difference]: With dead ends: 5091 [2021-11-19 14:19:57,035 INFO L226 Difference]: Without dead ends: 3238 [2021-11-19 14:19:57,064 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 [2021-11-19 14:19:57,068 INFO L933 BasicCegarLoop]: 2979 mSDtfsCounter, 2078 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:57,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 5406 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:19:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2021-11-19 14:19:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3234. [2021-11-19 14:19:57,489 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) [2021-11-19 14:19:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4469 transitions. [2021-11-19 14:19:57,541 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4469 transitions. Word has length 225 [2021-11-19 14:19:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:57,545 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 4469 transitions. [2021-11-19 14:19:57,548 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) [2021-11-19 14:19:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4469 transitions. [2021-11-19 14:19:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 14:19:57,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:57,566 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] [2021-11-19 14:19:57,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:57,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:57,780 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1259776299, now seen corresponding path program 1 times [2021-11-19 14:19:57,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:57,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633051321] [2021-11-19 14:19:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:57,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:57,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:19:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:59,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 14:20:00,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-19 14:20:00,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:00,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633051321] [2021-11-19 14:20:00,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633051321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:00,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:00,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:00,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957780241] [2021-11-19 14:20:00,721 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:00,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:00,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:00,725 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) [2021-11-19 14:20:02,898 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 [] [2021-11-19 14:20:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:10,443 INFO L93 Difference]: Finished difference Result 10138 states and 13933 transitions. [2021-11-19 14:20:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:10,444 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 [2021-11-19 14:20:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:10,525 INFO L225 Difference]: With dead ends: 10138 [2021-11-19 14:20:10,525 INFO L226 Difference]: Without dead ends: 6929 [2021-11-19 14:20:10,554 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 [2021-11-19 14:20:10,555 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 4306 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:10,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 7423 Invalid, 1508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 1055 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-19 14:20:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-11-19 14:20:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6921. [2021-11-19 14:20:11,147 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) [2021-11-19 14:20:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 9459 transitions. [2021-11-19 14:20:11,198 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 9459 transitions. Word has length 218 [2021-11-19 14:20:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:11,201 INFO L470 AbstractCegarLoop]: Abstraction has 6921 states and 9459 transitions. [2021-11-19 14:20:11,202 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) [2021-11-19 14:20:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 9459 transitions. [2021-11-19 14:20:11,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-19 14:20:11,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:11,223 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] [2021-11-19 14:20:11,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:11,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash -563004502, now seen corresponding path program 1 times [2021-11-19 14:20:11,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:11,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632610014] [2021-11-19 14:20:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:11,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:11,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:11,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:11,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:20:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:13,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:13,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-19 14:20:14,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-11-19 14:20:15,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:15,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632610014] [2021-11-19 14:20:15,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632610014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:15,150 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:15,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:15,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857763912] [2021-11-19 14:20:15,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:15,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:15,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:15,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:15,153 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) [2021-11-19 14:20:17,340 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 [] [2021-11-19 14:20:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:23,432 INFO L93 Difference]: Finished difference Result 17845 states and 24393 transitions. [2021-11-19 14:20:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:23,433 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 [2021-11-19 14:20:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:23,557 INFO L225 Difference]: With dead ends: 17845 [2021-11-19 14:20:23,557 INFO L226 Difference]: Without dead ends: 10949 [2021-11-19 14:20:23,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:23,607 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 3916 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 7623 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:23,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3916 Valid, 7623 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-19 14:20:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2021-11-19 14:20:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 10941. [2021-11-19 14:20:24,364 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) [2021-11-19 14:20:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10941 states to 10941 states and 14933 transitions. [2021-11-19 14:20:24,428 INFO L78 Accepts]: Start accepts. Automaton has 10941 states and 14933 transitions. Word has length 305 [2021-11-19 14:20:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:24,429 INFO L470 AbstractCegarLoop]: Abstraction has 10941 states and 14933 transitions. [2021-11-19 14:20:24,431 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) [2021-11-19 14:20:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10941 states and 14933 transitions. [2021-11-19 14:20:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-19 14:20:24,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:24,459 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] [2021-11-19 14:20:24,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:24,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1143770181, now seen corresponding path program 1 times [2021-11-19 14:20:24,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:24,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687416649] [2021-11-19 14:20:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:24,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:24,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:20:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:26,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:26,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2021-11-19 14:20:27,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-11-19 14:20:27,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:27,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687416649] [2021-11-19 14:20:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687416649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:27,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:27,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:27,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171581318] [2021-11-19 14:20:27,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:27,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:27,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:27,974 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) [2021-11-19 14:20:30,104 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 [] [2021-11-19 14:20:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:35,893 INFO L93 Difference]: Finished difference Result 25770 states and 35193 transitions. [2021-11-19 14:20:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:35,895 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 [2021-11-19 14:20:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:36,120 INFO L225 Difference]: With dead ends: 25770 [2021-11-19 14:20:36,121 INFO L226 Difference]: Without dead ends: 14854 [2021-11-19 14:20:36,179 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 [2021-11-19 14:20:36,182 INFO L933 BasicCegarLoop]: 4629 mSDtfsCounter, 3937 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 329 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 7936 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:36,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3937 Valid, 7936 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1074 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 14:20:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14854 states. [2021-11-19 14:20:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 14846. [2021-11-19 14:20:37,281 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) [2021-11-19 14:20:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14846 states to 14846 states and 20269 transitions. [2021-11-19 14:20:37,367 INFO L78 Accepts]: Start accepts. Automaton has 14846 states and 20269 transitions. Word has length 390 [2021-11-19 14:20:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:37,368 INFO L470 AbstractCegarLoop]: Abstraction has 14846 states and 20269 transitions. [2021-11-19 14:20:37,369 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) [2021-11-19 14:20:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 14846 states and 20269 transitions. [2021-11-19 14:20:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-19 14:20:37,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:37,402 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] [2021-11-19 14:20:37,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:37,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:37,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1468456089, now seen corresponding path program 1 times [2021-11-19 14:20:37,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:37,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945072535] [2021-11-19 14:20:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:37,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:37,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:37,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:20:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:39,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2021-11-19 14:20:40,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2021-11-19 14:20:41,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:41,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945072535] [2021-11-19 14:20:41,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945072535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:41,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:41,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:41,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150626755] [2021-11-19 14:20:41,078 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:41,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:41,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:41,081 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) [2021-11-19 14:20:43,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:20:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:20:48,126 INFO L93 Difference]: Finished difference Result 33157 states and 45225 transitions. [2021-11-19 14:20:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:20:48,128 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 [2021-11-19 14:20:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:20:48,246 INFO L225 Difference]: With dead ends: 33157 [2021-11-19 14:20:48,246 INFO L226 Difference]: Without dead ends: 18336 [2021-11-19 14:20:48,305 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 [2021-11-19 14:20:48,306 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 4161 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 7994 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:20:48,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4161 Valid, 7994 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1029 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 14:20:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18336 states. [2021-11-19 14:20:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18336 to 18328. [2021-11-19 14:20:49,723 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) [2021-11-19 14:20:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18328 states to 18328 states and 24959 transitions. [2021-11-19 14:20:49,824 INFO L78 Accepts]: Start accepts. Automaton has 18328 states and 24959 transitions. Word has length 392 [2021-11-19 14:20:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:20:49,830 INFO L470 AbstractCegarLoop]: Abstraction has 18328 states and 24959 transitions. [2021-11-19 14:20:49,830 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) [2021-11-19 14:20:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 18328 states and 24959 transitions. [2021-11-19 14:20:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-19 14:20:49,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:20:49,869 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] [2021-11-19 14:20:49,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:20:50,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:20:50,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:20:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:20:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2004255708, now seen corresponding path program 1 times [2021-11-19 14:20:50,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:20:50,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490495406] [2021-11-19 14:20:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:50,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:20:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:20:50,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:20:50,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:20:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:20:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2021-11-19 14:20:52,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-19 14:20:53,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:53,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490495406] [2021-11-19 14:20:53,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490495406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:20:53,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:20:53,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:20:53,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747639703] [2021-11-19 14:20:53,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:20:53,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:20:53,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:20:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:20:53,931 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) [2021-11-19 14:20:56,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:01,402 INFO L93 Difference]: Finished difference Result 39637 states and 54001 transitions. [2021-11-19 14:21:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:21:01,403 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 [2021-11-19 14:21:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:01,533 INFO L225 Difference]: With dead ends: 39637 [2021-11-19 14:21:01,533 INFO L226 Difference]: Without dead ends: 21334 [2021-11-19 14:21:01,603 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 [2021-11-19 14:21:01,604 INFO L933 BasicCegarLoop]: 4014 mSDtfsCounter, 3956 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:01,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3956 Valid, 7296 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1097 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 14:21:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21334 states. [2021-11-19 14:21:03,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21334 to 21326. [2021-11-19 14:21:03,380 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) [2021-11-19 14:21:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21326 states to 21326 states and 29053 transitions. [2021-11-19 14:21:03,491 INFO L78 Accepts]: Start accepts. Automaton has 21326 states and 29053 transitions. Word has length 438 [2021-11-19 14:21:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:03,493 INFO L470 AbstractCegarLoop]: Abstraction has 21326 states and 29053 transitions. [2021-11-19 14:21:03,493 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) [2021-11-19 14:21:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 21326 states and 29053 transitions. [2021-11-19 14:21:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-19 14:21:03,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:03,540 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] [2021-11-19 14:21:03,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:03,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:03,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash 564483266, now seen corresponding path program 1 times [2021-11-19 14:21:03,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:03,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428545913] [2021-11-19 14:21:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:03,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:03,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:03,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:21:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:21:05,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-19 14:21:06,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 14:21:08,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:08,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428545913] [2021-11-19 14:21:08,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428545913] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:21:08,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:21:08,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 16 [2021-11-19 14:21:08,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585919077] [2021-11-19 14:21:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:08,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:21:08,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:21:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:21:08,350 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) [2021-11-19 14:21:10,513 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 [] [2021-11-19 14:21:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:27,631 INFO L93 Difference]: Finished difference Result 69271 states and 94796 transitions. [2021-11-19 14:21:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:21:27,632 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 [2021-11-19 14:21:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:28,083 INFO L225 Difference]: With dead ends: 69271 [2021-11-19 14:21:28,083 INFO L226 Difference]: Without dead ends: 47968 [2021-11-19 14:21:28,185 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 [2021-11-19 14:21:28,187 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 6009 mSDsluCounter, 37542 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 1196 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6042 SdHoareTripleChecker+Valid, 42263 SdHoareTripleChecker+Invalid, 4663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:28,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6042 Valid, 42263 Invalid, 4663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1196 Valid, 3466 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2021-11-19 14:21:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47968 states. [2021-11-19 14:21:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47968 to 41632. [2021-11-19 14:21:31,713 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) [2021-11-19 14:21:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41632 states to 41632 states and 56683 transitions. [2021-11-19 14:21:31,949 INFO L78 Accepts]: Start accepts. Automaton has 41632 states and 56683 transitions. Word has length 447 [2021-11-19 14:21:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:31,950 INFO L470 AbstractCegarLoop]: Abstraction has 41632 states and 56683 transitions. [2021-11-19 14:21:31,951 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) [2021-11-19 14:21:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 41632 states and 56683 transitions. [2021-11-19 14:21:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-19 14:21:32,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:32,023 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] [2021-11-19 14:21:32,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:32,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:32,237 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:32,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash -503940985, now seen corresponding path program 1 times [2021-11-19 14:21:32,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:32,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556248470] [2021-11-19 14:21:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:32,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:32,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:32,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:21:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:34,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:21:34,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-19 14:21:36,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 14:21:38,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:38,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556248470] [2021-11-19 14:21:38,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556248470] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:21:38,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:21:38,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-19 14:21:38,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636985927] [2021-11-19 14:21:38,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:38,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:21:38,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:21:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-19 14:21:38,662 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) [2021-11-19 14:21:40,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:42,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:44,883 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 [] [2021-11-19 14:22:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:01,661 INFO L93 Difference]: Finished difference Result 109845 states and 150014 transitions. [2021-11-19 14:22:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:22:01,663 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 [2021-11-19 14:22:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:02,294 INFO L225 Difference]: With dead ends: 109845 [2021-11-19 14:22:02,294 INFO L226 Difference]: Without dead ends: 68236 [2021-11-19 14:22:02,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 14:22:02,479 INFO L933 BasicCegarLoop]: 4119 mSDtfsCounter, 6209 mSDsluCounter, 39750 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 1570 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6229 SdHoareTripleChecker+Valid, 43869 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1570 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:02,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6229 Valid, 43869 Invalid, 4739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1570 Valid, 3166 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2021-11-19 14:22:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68236 states. [2021-11-19 14:22:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68236 to 41638. [2021-11-19 14:22:06,923 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) [2021-11-19 14:22:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41638 states to 41638 states and 56693 transitions. [2021-11-19 14:22:07,366 INFO L78 Accepts]: Start accepts. Automaton has 41638 states and 56693 transitions. Word has length 453 [2021-11-19 14:22:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:07,369 INFO L470 AbstractCegarLoop]: Abstraction has 41638 states and 56693 transitions. [2021-11-19 14:22:07,369 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) [2021-11-19 14:22:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 41638 states and 56693 transitions. [2021-11-19 14:22:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-11-19 14:22:07,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:07,447 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] [2021-11-19 14:22:07,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:07,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -100721044, now seen corresponding path program 1 times [2021-11-19 14:22:07,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:07,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664292876] [2021-11-19 14:22:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:07,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:07,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:07,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:22:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:09,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:22:09,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2021-11-19 14:22:10,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2021-11-19 14:22:12,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:12,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664292876] [2021-11-19 14:22:12,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664292876] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:22:12,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:22:12,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 17 [2021-11-19 14:22:12,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144384835] [2021-11-19 14:22:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:12,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:22:12,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:22:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:22:12,334 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) [2021-11-19 14:22:14,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:34,686 INFO L93 Difference]: Finished difference Result 109929 states and 150122 transitions. [2021-11-19 14:22:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 14:22:34,687 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 [2021-11-19 14:22:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:35,035 INFO L225 Difference]: With dead ends: 109929 [2021-11-19 14:22:35,035 INFO L226 Difference]: Without dead ends: 68314 [2021-11-19 14:22:35,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 14:22:35,192 INFO L933 BasicCegarLoop]: 3559 mSDtfsCounter, 6357 mSDsluCounter, 34131 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 1563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6394 SdHoareTripleChecker+Valid, 37690 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:35,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6394 Valid, 37690 Invalid, 5080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1563 Valid, 3516 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2021-11-19 14:22:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68314 states. [2021-11-19 14:22:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68314 to 41632. [2021-11-19 14:22:39,189 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) [2021-11-19 14:22:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41632 states to 41632 states and 56683 transitions. [2021-11-19 14:22:39,399 INFO L78 Accepts]: Start accepts. Automaton has 41632 states and 56683 transitions. Word has length 455 [2021-11-19 14:22:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:39,401 INFO L470 AbstractCegarLoop]: Abstraction has 41632 states and 56683 transitions. [2021-11-19 14:22:39,401 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) [2021-11-19 14:22:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 41632 states and 56683 transitions. [2021-11-19 14:22:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-19 14:22:39,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:39,442 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] [2021-11-19 14:22:39,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:39,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:39,657 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash -200886892, now seen corresponding path program 1 times [2021-11-19 14:22:39,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:39,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116873795] [2021-11-19 14:22:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:39,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:39,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:39,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:39,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:22:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:41,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:41,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2021-11-19 14:22:42,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2021-11-19 14:22:43,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116873795] [2021-11-19 14:22:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116873795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:43,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:43,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:22:43,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073419581] [2021-11-19 14:22:43,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:43,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:22:43,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:43,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:22:43,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:22:43,670 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) [2021-11-19 14:22:45,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:53,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:53,565 INFO L93 Difference]: Finished difference Result 74254 states and 101190 transitions. [2021-11-19 14:22:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:22:53,567 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 [2021-11-19 14:22:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:53,721 INFO L225 Difference]: With dead ends: 74254 [2021-11-19 14:22:53,721 INFO L226 Difference]: Without dead ends: 32619 [2021-11-19 14:22:53,849 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 [2021-11-19 14:22:53,850 INFO L933 BasicCegarLoop]: 4298 mSDtfsCounter, 3932 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:53,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3932 Valid, 7621 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1085 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-19 14:22:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32619 states. [2021-11-19 14:22:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32619 to 32609. [2021-11-19 14:22:56,663 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) [2021-11-19 14:22:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32609 states to 32609 states and 44472 transitions. [2021-11-19 14:22:56,811 INFO L78 Accepts]: Start accepts. Automaton has 32609 states and 44472 transitions. Word has length 460 [2021-11-19 14:22:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:56,812 INFO L470 AbstractCegarLoop]: Abstraction has 32609 states and 44472 transitions. [2021-11-19 14:22:56,812 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) [2021-11-19 14:22:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 32609 states and 44472 transitions. [2021-11-19 14:22:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-11-19 14:22:56,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:56,862 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] [2021-11-19 14:22:56,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:57,064 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 218508022, now seen corresponding path program 1 times [2021-11-19 14:22:57,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:57,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203099647] [2021-11-19 14:22:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:57,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:57,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:57,069 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:57,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:22:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:59,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:22:59,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2021-11-19 14:23:01,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2021-11-19 14:23:02,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:02,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203099647] [2021-11-19 14:23:02,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203099647] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:02,724 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:02,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:23:02,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846029491] [2021-11-19 14:23:02,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:23:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:23:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:02,728 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) [2021-11-19 14:23:06,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:10,633 INFO L93 Difference]: Finished difference Result 72422 states and 99265 transitions. [2021-11-19 14:23:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:23:10,634 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 [2021-11-19 14:23:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:10,790 INFO L225 Difference]: With dead ends: 72422 [2021-11-19 14:23:10,790 INFO L226 Difference]: Without dead ends: 39859 [2021-11-19 14:23:10,874 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 [2021-11-19 14:23:10,875 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 2867 mSDsluCounter, 12118 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 738 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 15273 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:10,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 15273 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 14:23:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39859 states. [2021-11-19 14:23:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39859 to 32615. [2021-11-19 14:23:13,985 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) [2021-11-19 14:23:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32615 states to 32615 states and 44478 transitions. [2021-11-19 14:23:14,122 INFO L78 Accepts]: Start accepts. Automaton has 32615 states and 44478 transitions. Word has length 573 [2021-11-19 14:23:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:14,124 INFO L470 AbstractCegarLoop]: Abstraction has 32615 states and 44478 transitions. [2021-11-19 14:23:14,124 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) [2021-11-19 14:23:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 32615 states and 44478 transitions. [2021-11-19 14:23:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2021-11-19 14:23:14,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:14,187 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] [2021-11-19 14:23:14,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:14,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:14,413 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1709011551, now seen corresponding path program 1 times [2021-11-19 14:23:14,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:14,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536845795] [2021-11-19 14:23:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:14,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:14,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:23:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:16,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 14:23:16,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-19 14:23:18,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2021-11-19 14:23:20,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:20,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536845795] [2021-11-19 14:23:20,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536845795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:20,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:20,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:23:20,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143877019] [2021-11-19 14:23:20,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:20,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:23:20,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:23:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:23:20,214 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) [2021-11-19 14:23:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:24,961 INFO L93 Difference]: Finished difference Result 67722 states and 92526 transitions. [2021-11-19 14:23:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:23:24,963 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 [2021-11-19 14:23:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:25,117 INFO L225 Difference]: With dead ends: 67722 [2021-11-19 14:23:25,117 INFO L226 Difference]: Without dead ends: 35153 [2021-11-19 14:23:25,215 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 [2021-11-19 14:23:25,215 INFO L933 BasicCegarLoop]: 2989 mSDtfsCounter, 1386 mSDsluCounter, 20028 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 23017 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:25,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 23017 Invalid, 443 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:23:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-19 14:23:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 32631. [2021-11-19 14:23:28,715 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) [2021-11-19 14:23:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32631 states to 32631 states and 44502 transitions. [2021-11-19 14:23:28,997 INFO L78 Accepts]: Start accepts. Automaton has 32631 states and 44502 transitions. Word has length 594 [2021-11-19 14:23:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:28,999 INFO L470 AbstractCegarLoop]: Abstraction has 32631 states and 44502 transitions. [2021-11-19 14:23:28,999 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) [2021-11-19 14:23:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 32631 states and 44502 transitions. [2021-11-19 14:23:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-19 14:23:29,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:29,063 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] [2021-11-19 14:23:29,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:29,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:29,289 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2013191931, now seen corresponding path program 1 times [2021-11-19 14:23:29,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:29,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576809735] [2021-11-19 14:23:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:29,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:29,296 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:29,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9d2f5d0-2d99-4af0-9f64-07ec8e7df622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:23:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:31,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:31,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2021-11-19 14:23:33,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2021-11-19 14:23:34,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:34,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576809735] [2021-11-19 14:23:34,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576809735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:34,758 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:34,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:23:34,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408590027] [2021-11-19 14:23:34,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:34,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:23:34,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:23:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:34,762 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) [2021-11-19 14:23:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:37,894 INFO L93 Difference]: Finished difference Result 65232 states and 88971 transitions. [2021-11-19 14:23:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:23:37,902 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 [2021-11-19 14:23:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:38,063 INFO L225 Difference]: With dead ends: 65232 [2021-11-19 14:23:38,063 INFO L226 Difference]: Without dead ends: 32647 [2021-11-19 14:23:38,153 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 [2021-11-19 14:23:38,154 INFO L933 BasicCegarLoop]: 2452 mSDtfsCounter, 4 mSDsluCounter, 4898 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7350 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:38,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7350 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:23:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32647 states.