./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-hp-hp100.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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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-hp-hp100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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 c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:49:43,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:49:43,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:49:43,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:49:43,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:49:43,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:49:43,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:49:43,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:49:43,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:49:43,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:49:43,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:49:43,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:49:43,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:49:43,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:49:43,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:49:43,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:49:43,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:49:43,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:49:43,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:49:43,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:49:43,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:49:43,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:49:43,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:49:43,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:49:43,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:49:43,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:49:43,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:49:43,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:49:43,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:49:43,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:49:43,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:49:43,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:49:43,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:49:43,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:49:43,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:49:43,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:49:43,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:49:43,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:49:43,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:49:43,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:49:43,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:49:43,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:49:43,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:49:43,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:49:43,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:49:43,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:49:43,839 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:49:43,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:49:43,840 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:49:43,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:49:43,840 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:49:43,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:49:43,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:49:43,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:49:43,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:49:43,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:49:43,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:49:43,841 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:49:43,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:49:43,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:49:43,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:49:43,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:49:43,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:49:43,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:49:43,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:49:43,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:49:43,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:49:43,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:49:43,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:49:43,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:49:43,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:43,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:49:43,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:49:43,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:49:43,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:49:43,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:49:43,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:49:43,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:49:43,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:49:43,846 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb [2021-11-19 15:49:44,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:49:44,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:49:44,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:49:44,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:49:44,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:49:44,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-11-19 15:49:44,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/d259f9ff3/371a5ae2e8a24f018c0cc16b4fc97f74/FLAGcb900504e [2021-11-19 15:49:45,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:49:45,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-11-19 15:49:45,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/d259f9ff3/371a5ae2e8a24f018c0cc16b4fc97f74/FLAGcb900504e [2021-11-19 15:49:45,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/d259f9ff3/371a5ae2e8a24f018c0cc16b4fc97f74 [2021-11-19 15:49:45,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:49:45,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:49:45,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:45,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:49:45,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:49:45,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:45" (1/1) ... [2021-11-19 15:49:45,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe7396a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:45, skipping insertion in model container [2021-11-19 15:49:45,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:45" (1/1) ... [2021-11-19 15:49:45,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:49:45,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:48,583 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2021-11-19 15:49:48,589 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2021-11-19 15:49:48,614 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:48,683 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 15:49:48,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52289b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:48, skipping insertion in model container [2021-11-19 15:49:48,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:48,684 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:49:48,686 INFO L158 Benchmark]: Toolchain (without parser) took 2996.55ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 61.5MB in the beginning and 76.1MB in the end (delta: -14.7MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-19 15:49:48,687 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:49:48,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2992.51ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 61.1MB in the beginning and 76.1MB in the end (delta: -15.0MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-19 15:49:48,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2992.51ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 61.1MB in the beginning and 76.1MB in the end (delta: -15.0MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6045]: 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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-hp-hp100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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 c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:49:50,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:49:50,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:49:50,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:49:50,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:49:50,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:49:50,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:49:50,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:49:50,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:49:50,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:49:50,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:49:50,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:49:50,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:49:50,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:49:51,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:49:51,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:49:51,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:49:51,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:49:51,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:49:51,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:49:51,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:49:51,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:49:51,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:49:51,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:49:51,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:49:51,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:49:51,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:49:51,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:49:51,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:49:51,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:49:51,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:49:51,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:49:51,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:49:51,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:49:51,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:49:51,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:49:51,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:49:51,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:49:51,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:49:51,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:49:51,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:49:51,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:49:51,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:49:51,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:49:51,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:49:51,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:49:51,106 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:49:51,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:49:51,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:49:51,107 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:49:51,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:49:51,107 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:49:51,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:49:51,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:49:51,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:49:51,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:49:51,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:49:51,109 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:49:51,109 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:49:51,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:49:51,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:49:51,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:49:51,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:49:51,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:49:51,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:49:51,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:49:51,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:51,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:49:51,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:49:51,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:49:51,112 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:49:51,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:51,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:49:51,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:49:51,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:49:51,114 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb [2021-11-19 15:49:51,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:49:51,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:49:51,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:49:51,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:49:51,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:49:51,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-11-19 15:49:51,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/106c9db5e/f08ee8be9bf941f58e51435e6a8183c1/FLAG75ccd256d [2021-11-19 15:49:52,784 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:49:52,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-11-19 15:49:52,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/106c9db5e/f08ee8be9bf941f58e51435e6a8183c1/FLAG75ccd256d [2021-11-19 15:49:53,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/data/106c9db5e/f08ee8be9bf941f58e51435e6a8183c1 [2021-11-19 15:49:53,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:49:53,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:49:53,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:53,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:49:53,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:49:53,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:53" (1/1) ... [2021-11-19 15:49:53,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5a8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:53, skipping insertion in model container [2021-11-19 15:49:53,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:49:53" (1/1) ... [2021-11-19 15:49:53,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:49:53,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:56,298 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2021-11-19 15:49:56,301 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2021-11-19 15:49:56,322 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:56,382 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:49:56,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:49:56,781 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2021-11-19 15:49:56,781 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2021-11-19 15:49:56,786 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:56,805 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:49:57,173 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2021-11-19 15:49:57,174 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_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2021-11-19 15:49:57,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:49:57,419 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:49:57,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57 WrapperNode [2021-11-19 15:49:57,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:49:57,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:49:57,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:49:57,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:49:57,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,736 INFO L137 Inliner]: procedures = 404, calls = 1855, calls flagged for inlining = 177, calls inlined = 157, statements flattened = 4117 [2021-11-19 15:49:57,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:49:57,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:49:57,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:49:57,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:49:57,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:57,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:58,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:49:58,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:49:58,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:49:58,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:49:58,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (1/1) ... [2021-11-19 15:49:58,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:49:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:49:58,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:49:58,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:49:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 15:49:58,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 15:49:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 15:49:58,093 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 15:49:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2021-11-19 15:49:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2021-11-19 15:49:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 15:49:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 15:49:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 15:49:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 15:49:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-11-19 15:49:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-11-19 15:49:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2021-11-19 15:49:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2021-11-19 15:49:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 15:49:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 15:49:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2021-11-19 15:49:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2021-11-19 15:49:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:49:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2021-11-19 15:49:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2021-11-19 15:49:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 15:49:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 15:49:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 15:49:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 15:49:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 15:49:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 15:49:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 15:49:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 15:49:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 15:49:58,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 15:49:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:49:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 15:49:58,098 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 15:49:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-19 15:49:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-19 15:49:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:49:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_103 [2021-11-19 15:49:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_103 [2021-11-19 15:49:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:49:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:49:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 15:49:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 15:49:58,100 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2021-11-19 15:49:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2021-11-19 15:49:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 15:49:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 15:49:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 15:49:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 15:49:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 15:49:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 15:49:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 15:49:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 15:49:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2021-11-19 15:49:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2021-11-19 15:49:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2021-11-19 15:49:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2021-11-19 15:49:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 15:49:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 15:49:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 15:49:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 15:49:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 15:49:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 15:49:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2021-11-19 15:49:58,107 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2021-11-19 15:49:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 15:49:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 15:49:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2021-11-19 15:49:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2021-11-19 15:49:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 15:49:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 15:49:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2021-11-19 15:49:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2021-11-19 15:49:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2021-11-19 15:49:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2021-11-19 15:49:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:49:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2021-11-19 15:49:58,110 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2021-11-19 15:49:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2021-11-19 15:49:58,110 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2021-11-19 15:49:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 15:49:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 15:49:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:49:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 15:49:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 15:49:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 15:49:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 15:49:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:49:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 15:49:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 15:49:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 15:49:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:49:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:49:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 15:49:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:49:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:49:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 15:49:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 15:49:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 15:49:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 15:49:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2021-11-19 15:49:58,115 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2021-11-19 15:49:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 15:49:58,115 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 15:49:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 15:49:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 15:49:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 15:49:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 15:49:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 15:49:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:49:58,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:49:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2021-11-19 15:49:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2021-11-19 15:49:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:49:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:49:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:49:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 15:49:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:49:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 15:49:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 15:49:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 15:49:58,130 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 15:49:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 15:49:58,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:49:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:49:58,130 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 15:49:58,131 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 15:49:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:49:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:49:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-19 15:49:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-19 15:49:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 15:49:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 15:49:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 15:49:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 15:49:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 15:49:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 15:49:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-19 15:49:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-19 15:49:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_pci_remove [2021-11-19 15:49:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_pci_remove [2021-11-19 15:49:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2021-11-19 15:49:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2021-11-19 15:49:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 15:49:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 15:49:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 15:49:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 15:49:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:49:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:49:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 15:49:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 15:49:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hp100_private [2021-11-19 15:49:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hp100_private [2021-11-19 15:49:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 15:49:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 15:49:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 15:49:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 15:49:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-19 15:49:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-19 15:49:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 15:49:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 15:49:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hp100_private [2021-11-19 15:49:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hp100_private [2021-11-19 15:49:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-11-19 15:49:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-11-19 15:49:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-19 15:49:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-19 15:49:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 15:49:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 15:49:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2021-11-19 15:49:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2021-11-19 15:49:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2021-11-19 15:49:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2021-11-19 15:49:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 15:49:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 15:49:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2021-11-19 15:49:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2021-11-19 15:49:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-19 15:49:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-19 15:49:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-19 15:49:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-19 15:49:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 15:49:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 15:49:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2021-11-19 15:49:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2021-11-19 15:49:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-19 15:49:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-19 15:49:58,902 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:49:58,908 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:01,148 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:50:23,897 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 15:50:23,898 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 15:50:24,421 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566-1: havoc #t~ret676#1; [2021-11-19 15:50:24,422 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566: SUMMARY for call #t~ret676#1 := schedule_timeout_interruptible(1bv64); srcloc: null [2021-11-19 15:50:24,422 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0bv64 == ~bvand64(2096896bv64, ~sign_extendFrom32To64(~tmp___4~7#1)); [2021-11-19 15:50:24,422 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0bv64 == ~bvand64(2096896bv64, ~sign_extendFrom32To64(~tmp___4~7#1))); [2021-11-19 15:50:24,422 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume ~bvslt64(~bvsub64(~jiffies~0, ~time~2#1), 0bv64); [2021-11-19 15:50:24,422 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume !~bvslt64(~bvsub64(~jiffies~0, ~time~2#1), 0bv64); [2021-11-19 15:50:24,493 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:24,517 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:24,517 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 15:50:24,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:24 BoogieIcfgContainer [2021-11-19 15:50:24,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:24,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:24,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:24,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:24,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:49:53" (1/3) ... [2021-11-19 15:50:24,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b159c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:24, skipping insertion in model container [2021-11-19 15:50:24,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:49:57" (2/3) ... [2021-11-19 15:50:24,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b159c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:24, skipping insertion in model container [2021-11-19 15:50:24,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:24" (3/3) ... [2021-11-19 15:50:24,530 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2021-11-19 15:50:24,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:24,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:50:24,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:24,600 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 15:50:24,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:50:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1100 states have (on average 1.2963636363636364) internal successors, (1426), 1148 states have internal predecessors, (1426), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) [2021-11-19 15:50:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 15:50:24,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:24,730 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 15:50:24,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1283002549, now seen corresponding path program 1 times [2021-11-19 15:50:24,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:24,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979115450] [2021-11-19 15:50:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:24,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:24,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:24,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:24,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:50:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:25,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:25,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 15:50:26,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 15:50:26,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:26,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979115450] [2021-11-19 15:50:26,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979115450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:26,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:26,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:26,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420432353] [2021-11-19 15:50:26,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:26,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:26,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:26,859 INFO L87 Difference]: Start difference. First operand has 1748 states, 1100 states have (on average 1.2963636363636364) internal successors, (1426), 1148 states have internal predecessors, (1426), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:50:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:31,575 INFO L93 Difference]: Finished difference Result 6484 states and 9706 transitions. [2021-11-19 15:50:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:31,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 128 [2021-11-19 15:50:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:31,656 INFO L225 Difference]: With dead ends: 6484 [2021-11-19 15:50:31,656 INFO L226 Difference]: Without dead ends: 4645 [2021-11-19 15:50:31,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 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 15:50:31,693 INFO L933 BasicCegarLoop]: 3910 mSDtfsCounter, 4488 mSDsluCounter, 5853 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 9763 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:31,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4488 Valid, 9763 Invalid, 1062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 15:50:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2021-11-19 15:50:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4637. [2021-11-19 15:50:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4637 states, 2907 states have (on average 1.2934296525627795) internal successors, (3760), 3039 states have internal predecessors, (3760), 1515 states have call successors, (1515), 218 states have call predecessors, (1515), 214 states have return successors, (1529), 1457 states have call predecessors, (1529), 1515 states have call successors, (1529) [2021-11-19 15:50:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 6804 transitions. [2021-11-19 15:50:32,330 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 6804 transitions. Word has length 128 [2021-11-19 15:50:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:32,332 INFO L470 AbstractCegarLoop]: Abstraction has 4637 states and 6804 transitions. [2021-11-19 15:50:32,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:50:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 6804 transitions. [2021-11-19 15:50:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 15:50:32,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:32,370 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:50:32,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:32,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:32,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2069015621, now seen corresponding path program 1 times [2021-11-19 15:50:32,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:32,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010875630] [2021-11-19 15:50:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:32,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:32,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:32,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:50:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:33,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:33,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 15:50:34,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 15:50:35,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:35,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010875630] [2021-11-19 15:50:35,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010875630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:35,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:35,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:50:35,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348918532] [2021-11-19 15:50:35,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:50:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:50:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:50:35,010 INFO L87 Difference]: Start difference. First operand 4637 states and 6804 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-19 15:50:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:40,140 INFO L93 Difference]: Finished difference Result 15190 states and 22318 transitions. [2021-11-19 15:50:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 193 [2021-11-19 15:50:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:40,251 INFO L225 Difference]: With dead ends: 15190 [2021-11-19 15:50:40,251 INFO L226 Difference]: Without dead ends: 10566 [2021-11-19 15:50:40,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 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 15:50:40,289 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 3854 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3854 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:40,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3854 Valid, 7246 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 15:50:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2021-11-19 15:50:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 10556. [2021-11-19 15:50:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10556 states, 6517 states have (on average 1.2935399723799295) internal successors, (8430), 6833 states have internal predecessors, (8430), 3513 states have call successors, (3513), 531 states have call predecessors, (3513), 525 states have return successors, (3529), 3380 states have call predecessors, (3529), 3513 states have call successors, (3529) [2021-11-19 15:50:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10556 states to 10556 states and 15472 transitions. [2021-11-19 15:50:41,349 INFO L78 Accepts]: Start accepts. Automaton has 10556 states and 15472 transitions. Word has length 193 [2021-11-19 15:50:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:41,351 INFO L470 AbstractCegarLoop]: Abstraction has 10556 states and 15472 transitions. [2021-11-19 15:50:41,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-19 15:50:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10556 states and 15472 transitions. [2021-11-19 15:50:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-11-19 15:50:41,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:41,374 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:50:41,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:41,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:41,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1736834013, now seen corresponding path program 1 times [2021-11-19 15:50:41,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:41,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608454406] [2021-11-19 15:50:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:41,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:41,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:41,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:41,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:50:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:42,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-11-19 15:50:43,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-19 15:50:44,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:44,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608454406] [2021-11-19 15:50:44,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608454406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:44,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:44,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:50:44,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597755589] [2021-11-19 15:50:44,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:44,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:50:44,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:50:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:50:44,755 INFO L87 Difference]: Start difference. First operand 10556 states and 15472 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 3 states have call successors, (106), 3 states have call predecessors, (106), 3 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2021-11-19 15:50:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:45,818 INFO L93 Difference]: Finished difference Result 28691 states and 41983 transitions. [2021-11-19 15:50:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:45,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 3 states have call successors, (106), 3 states have call predecessors, (106), 3 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) Word has length 324 [2021-11-19 15:50:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:45,975 INFO L225 Difference]: With dead ends: 28691 [2021-11-19 15:50:45,975 INFO L226 Difference]: Without dead ends: 18148 [2021-11-19 15:50:46,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 645 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 15:50:46,051 INFO L933 BasicCegarLoop]: 2985 mSDtfsCounter, 2232 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 5394 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:46,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 5394 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18148 states. [2021-11-19 15:50:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18148 to 18142. [2021-11-19 15:50:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.287244488083549) internal successors, (14421), 11747 states have internal predecessors, (14421), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:50:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26478 transitions. [2021-11-19 15:50:47,521 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26478 transitions. Word has length 324 [2021-11-19 15:50:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:47,525 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26478 transitions. [2021-11-19 15:50:47,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 3 states have call successors, (106), 3 states have call predecessors, (106), 3 states have return successors, (101), 3 states have call predecessors, (101), 3 states have call successors, (101) [2021-11-19 15:50:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26478 transitions. [2021-11-19 15:50:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-19 15:50:47,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:47,547 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:50:47,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,888 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1354354004, now seen corresponding path program 1 times [2021-11-19 15:50:47,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:47,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923109950] [2021-11-19 15:50:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:47,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:47,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:47,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:50:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:49,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:50:49,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:50:51,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:51,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923109950] [2021-11-19 15:50:51,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923109950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:51,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188782994] [2021-11-19 15:50:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:51,117 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:51,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:51,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 15:50:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:52,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:50:52,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:50:53,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:50:54,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188782994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:54,437 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:50:54,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:50:54,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800856484] [2021-11-19 15:50:54,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:54,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:54,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:54,439 INFO L87 Difference]: Start difference. First operand 18142 states and 26478 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:50:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:58,791 INFO L93 Difference]: Finished difference Result 36271 states and 53176 transitions. [2021-11-19 15:50:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:58,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 257 [2021-11-19 15:50:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:58,898 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:50:58,898 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:50:59,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:59,057 INFO L933 BasicCegarLoop]: 2478 mSDtfsCounter, 2339 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:59,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2339 Valid, 3865 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 15:50:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:51:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:51:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.28581629920557) internal successors, (14405), 11747 states have internal predecessors, (14405), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:51:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26462 transitions. [2021-11-19 15:51:00,609 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26462 transitions. Word has length 257 [2021-11-19 15:51:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:00,611 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26462 transitions. [2021-11-19 15:51:00,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26462 transitions. [2021-11-19 15:51:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 15:51:00,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:00,633 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:51:00,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:00,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:01,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:01,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:01,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1464342652, now seen corresponding path program 1 times [2021-11-19 15:51:01,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:01,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585740216] [2021-11-19 15:51:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:01,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:01,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:01,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:51:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:02,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:51:02,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:51:03,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:03,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585740216] [2021-11-19 15:51:03,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585740216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:03,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [877840279] [2021-11-19 15:51:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:03,436 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:03,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:03,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:03,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 15:51:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:04,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:51:04,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:05,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:06,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [877840279] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:06,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:06,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:06,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808605776] [2021-11-19 15:51:06,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:06,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:06,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:06,466 INFO L87 Difference]: Start difference. First operand 18142 states and 26462 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:10,727 INFO L93 Difference]: Finished difference Result 36271 states and 53144 transitions. [2021-11-19 15:51:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 258 [2021-11-19 15:51:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:10,842 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:51:10,843 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:51:10,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:10,931 INFO L933 BasicCegarLoop]: 2477 mSDtfsCounter, 2338 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:10,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 3863 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:51:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:51:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:51:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.284388110327591) internal successors, (14389), 11747 states have internal predecessors, (14389), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:51:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26446 transitions. [2021-11-19 15:51:12,671 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26446 transitions. Word has length 258 [2021-11-19 15:51:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:12,672 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26446 transitions. [2021-11-19 15:51:12,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26446 transitions. [2021-11-19 15:51:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-19 15:51:12,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:12,696 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:51:12,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:12,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:13,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:13,108 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash -464506840, now seen corresponding path program 1 times [2021-11-19 15:51:13,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:13,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130128189] [2021-11-19 15:51:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:13,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:13,112 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:13,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:51:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:14,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:14,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:51:15,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:51:16,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:16,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130128189] [2021-11-19 15:51:16,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130128189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:16,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1515206381] [2021-11-19 15:51:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:16,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:16,042 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:16,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:51:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:17,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:18,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:19,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1515206381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:19,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:19,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:19,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622146011] [2021-11-19 15:51:19,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:19,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:19,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:19,159 INFO L87 Difference]: Start difference. First operand 18142 states and 26446 transitions. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:24,123 INFO L93 Difference]: Finished difference Result 36271 states and 53112 transitions. [2021-11-19 15:51:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 259 [2021-11-19 15:51:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:24,254 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:51:24,254 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:51:24,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:24,358 INFO L933 BasicCegarLoop]: 2476 mSDtfsCounter, 2337 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 3861 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:24,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 3861 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 15:51:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:51:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:51:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.2829599214496117) internal successors, (14373), 11747 states have internal predecessors, (14373), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:51:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26430 transitions. [2021-11-19 15:51:26,283 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26430 transitions. Word has length 259 [2021-11-19 15:51:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:26,285 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26430 transitions. [2021-11-19 15:51:26,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26430 transitions. [2021-11-19 15:51:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-19 15:51:26,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:26,308 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:51:26,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:26,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:26,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:26,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 580148864, now seen corresponding path program 1 times [2021-11-19 15:51:26,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:26,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045424720] [2021-11-19 15:51:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:26,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:26,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:26,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:51:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:27,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:27,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:51:28,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:51:29,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:29,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045424720] [2021-11-19 15:51:29,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045424720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:29,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [213174365] [2021-11-19 15:51:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:29,530 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:29,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:29,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:51:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:30,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:31,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [213174365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:32,905 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370717797] [2021-11-19 15:51:32,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:32,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:32,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:32,907 INFO L87 Difference]: Start difference. First operand 18142 states and 26430 transitions. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:38,488 INFO L93 Difference]: Finished difference Result 36271 states and 53080 transitions. [2021-11-19 15:51:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 260 [2021-11-19 15:51:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:38,610 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:51:38,610 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:51:38,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:38,704 INFO L933 BasicCegarLoop]: 2475 mSDtfsCounter, 3590 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 1070 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:38,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 3859 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 15:51:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:51:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:51:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.2815317325716327) internal successors, (14357), 11747 states have internal predecessors, (14357), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:51:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26414 transitions. [2021-11-19 15:51:40,365 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26414 transitions. Word has length 260 [2021-11-19 15:51:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:40,369 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26414 transitions. [2021-11-19 15:51:40,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26414 transitions. [2021-11-19 15:51:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-19 15:51:40,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:40,394 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:51:40,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:40,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:40,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:40,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1280746076, now seen corresponding path program 1 times [2021-11-19 15:51:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:40,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512291000] [2021-11-19 15:51:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:40,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:40,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:40,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:51:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:42,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:51:42,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:51:43,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:43,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512291000] [2021-11-19 15:51:43,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512291000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:43,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884963103] [2021-11-19 15:51:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:43,739 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:43,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:43,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:51:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:44,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:44,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:46,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:47,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [884963103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:47,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:47,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:47,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287985545] [2021-11-19 15:51:47,446 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:47,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:47,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:47,448 INFO L87 Difference]: Start difference. First operand 18142 states and 26414 transitions. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:52,173 INFO L93 Difference]: Finished difference Result 36271 states and 53048 transitions. [2021-11-19 15:51:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 261 [2021-11-19 15:51:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:52,278 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:51:52,278 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:51:52,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:52,412 INFO L933 BasicCegarLoop]: 2474 mSDtfsCounter, 2335 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 3857 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:52,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2335 Valid, 3857 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 15:51:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:51:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:51:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.2801035436936534) internal successors, (14341), 11747 states have internal predecessors, (14341), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:51:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26398 transitions. [2021-11-19 15:51:54,297 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26398 transitions. Word has length 261 [2021-11-19 15:51:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:54,298 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26398 transitions. [2021-11-19 15:51:54,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:51:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26398 transitions. [2021-11-19 15:51:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-19 15:51:54,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:54,322 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:51:54,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:54,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:54,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:54,735 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1275569532, now seen corresponding path program 1 times [2021-11-19 15:51:54,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:54,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986895092] [2021-11-19 15:51:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:54,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:54,740 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:51:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:55,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:55,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:51:56,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:51:57,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:57,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986895092] [2021-11-19 15:51:57,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986895092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:57,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [198953132] [2021-11-19 15:51:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:57,494 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:57,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:57,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:51:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:51:59,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-19 15:52:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [198953132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:00,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:00,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:52:00,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667907939] [2021-11-19 15:52:00,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:00,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:52:00,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:52:00,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:00,655 INFO L87 Difference]: Start difference. First operand 18142 states and 26398 transitions. Second operand has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:52:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:05,477 INFO L93 Difference]: Finished difference Result 36271 states and 53016 transitions. [2021-11-19 15:52:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:52:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 262 [2021-11-19 15:52:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:05,570 INFO L225 Difference]: With dead ends: 36271 [2021-11-19 15:52:05,570 INFO L226 Difference]: Without dead ends: 18142 [2021-11-19 15:52:05,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:05,779 INFO L933 BasicCegarLoop]: 2473 mSDtfsCounter, 2334 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:05,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 3855 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 15:52:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2021-11-19 15:52:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18142. [2021-11-19 15:52:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 11203 states have (on average 1.2786753548156744) internal successors, (14325), 11747 states have internal predecessors, (14325), 6012 states have call successors, (6012), 939 states have call predecessors, (6012), 926 states have return successors, (6045), 5777 states have call predecessors, (6045), 6012 states have call successors, (6045) [2021-11-19 15:52:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26382 transitions. [2021-11-19 15:52:07,178 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26382 transitions. Word has length 262 [2021-11-19 15:52:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:07,179 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26382 transitions. [2021-11-19 15:52:07,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 3 states have call successors, (60), 3 states have call predecessors, (60), 4 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-19 15:52:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26382 transitions. [2021-11-19 15:52:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-19 15:52:07,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:07,200 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 15:52:07,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:07,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-19 15:52:07,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:07,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash -968508640, now seen corresponding path program 1 times [2021-11-19 15:52:07,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:07,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152594482] [2021-11-19 15:52:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:07,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:07,627 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:07,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:52:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:52:08,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-19 15:52:09,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-19 15:52:10,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:10,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152594482] [2021-11-19 15:52:10,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152594482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:10,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160491841] [2021-11-19 15:52:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:10,190 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:10,191 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:10,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 15:52:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:11,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:52:11,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-19 15:52:11,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-19 15:52:12,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160491841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:12,628 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:12,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-19 15:52:12,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011877477] [2021-11-19 15:52:12,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:12,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:52:12,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:52:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:12,630 INFO L87 Difference]: Start difference. First operand 18142 states and 26382 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2021-11-19 15:52:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:18,785 INFO L93 Difference]: Finished difference Result 48729 states and 70786 transitions. [2021-11-19 15:52:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:52:18,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 263 [2021-11-19 15:52:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:18,895 INFO L225 Difference]: With dead ends: 48729 [2021-11-19 15:52:18,895 INFO L226 Difference]: Without dead ends: 30600 [2021-11-19 15:52:18,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:18,954 INFO L933 BasicCegarLoop]: 4631 mSDtfsCounter, 3809 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 8540 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:18,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3809 Valid, 8540 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 15:52:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30600 states. [2021-11-19 15:52:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30600 to 30584. [2021-11-19 15:52:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30584 states, 18882 states have (on average 1.277512975320411) internal successors, (24122), 19798 states have internal predecessors, (24122), 10081 states have call successors, (10081), 1637 states have call predecessors, (10081), 1620 states have return successors, (10114), 9700 states have call predecessors, (10114), 10081 states have call successors, (10114) [2021-11-19 15:52:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 44317 transitions. [2021-11-19 15:52:21,507 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 44317 transitions. Word has length 263 [2021-11-19 15:52:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:21,507 INFO L470 AbstractCegarLoop]: Abstraction has 30584 states and 44317 transitions. [2021-11-19 15:52:21,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 4 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2021-11-19 15:52:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 44317 transitions. [2021-11-19 15:52:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-19 15:52:21,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:21,547 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:21,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:21,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-19 15:52:21,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:21,976 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1277628471, now seen corresponding path program 1 times [2021-11-19 15:52:21,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:21,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606037864] [2021-11-19 15:52:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:21,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:21,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:21,979 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:21,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:52:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:23,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:52:23,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 255 proven. 3 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-11-19 15:52:24,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2021-11-19 15:52:25,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:25,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606037864] [2021-11-19 15:52:25,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606037864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:25,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846860958] [2021-11-19 15:52:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:25,352 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:25,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:25,353 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:25,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 15:52:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:26,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:52:26,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-19 15:52:27,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-19 15:52:28,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846860958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:28,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:28,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-19 15:52:28,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369200023] [2021-11-19 15:52:28,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:28,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:52:28,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:52:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:28,189 INFO L87 Difference]: Start difference. First operand 30584 states and 44317 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 15:52:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:34,780 INFO L93 Difference]: Finished difference Result 67503 states and 97627 transitions. [2021-11-19 15:52:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:52:34,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 363 [2021-11-19 15:52:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:34,941 INFO L225 Difference]: With dead ends: 67503 [2021-11-19 15:52:34,941 INFO L226 Difference]: Without dead ends: 36932 [2021-11-19 15:52:35,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:35,040 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 3844 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 7235 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:35,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3844 Valid, 7235 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 15:52:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36932 states. [2021-11-19 15:52:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36932 to 36916. [2021-11-19 15:52:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36916 states, 22952 states have (on average 1.2759672359707215) internal successors, (29286), 24038 states have internal predecessors, (29286), 11961 states have call successors, (11961), 2019 states have call predecessors, (11961), 2002 states have return successors, (11994), 11520 states have call predecessors, (11994), 11961 states have call successors, (11994) [2021-11-19 15:52:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36916 states to 36916 states and 53241 transitions. [2021-11-19 15:52:38,455 INFO L78 Accepts]: Start accepts. Automaton has 36916 states and 53241 transitions. Word has length 363 [2021-11-19 15:52:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:38,456 INFO L470 AbstractCegarLoop]: Abstraction has 36916 states and 53241 transitions. [2021-11-19 15:52:38,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 15:52:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 36916 states and 53241 transitions. [2021-11-19 15:52:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-11-19 15:52:38,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:38,483 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:38,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:38,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:38,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:52:38,897 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1225504113, now seen corresponding path program 1 times [2021-11-19 15:52:38,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:38,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407260377] [2021-11-19 15:52:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:38,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:38,900 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:38,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:52:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:52:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 255 proven. 3 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-11-19 15:52:41,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-11-19 15:52:42,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:42,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407260377] [2021-11-19 15:52:42,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407260377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:42,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166159823] [2021-11-19 15:52:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:42,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:42,257 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:42,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:52:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:43,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:52:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-19 15:52:44,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-19 15:52:45,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166159823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:45,171 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:45,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-19 15:52:45,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786933156] [2021-11-19 15:52:45,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:45,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:52:45,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:52:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:45,175 INFO L87 Difference]: Start difference. First operand 36916 states and 53241 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 15:52:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:52,116 INFO L93 Difference]: Finished difference Result 81477 states and 117423 transitions. [2021-11-19 15:52:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:52:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 368 [2021-11-19 15:52:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:52,372 INFO L225 Difference]: With dead ends: 81477 [2021-11-19 15:52:52,373 INFO L226 Difference]: Without dead ends: 44574 [2021-11-19 15:52:52,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1459 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:52:52,706 INFO L933 BasicCegarLoop]: 4291 mSDtfsCounter, 4217 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 7149 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:52,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4217 Valid, 7149 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:52:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44574 states. [2021-11-19 15:52:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44574 to 44558. [2021-11-19 15:52:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44558 states, 27796 states have (on average 1.2759389840264785) internal successors, (35466), 29095 states have internal predecessors, (35466), 14307 states have call successors, (14307), 2471 states have call predecessors, (14307), 2454 states have return successors, (14340), 13794 states have call predecessors, (14340), 14307 states have call successors, (14340) [2021-11-19 15:52:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44558 states to 44558 states and 64113 transitions. [2021-11-19 15:52:56,885 INFO L78 Accepts]: Start accepts. Automaton has 44558 states and 64113 transitions. Word has length 368 [2021-11-19 15:52:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:56,886 INFO L470 AbstractCegarLoop]: Abstraction has 44558 states and 64113 transitions. [2021-11-19 15:52:56,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 15:52:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 44558 states and 64113 transitions. [2021-11-19 15:52:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-19 15:52:56,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:56,912 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 15:52:56,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:57,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:57,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:57,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:57,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash -631395220, now seen corresponding path program 1 times [2021-11-19 15:52:57,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:57,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851283890] [2021-11-19 15:52:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:57,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:57,331 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:57,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 15:52:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:58,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:52:58,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 312 proven. 3 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-19 15:52:59,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-11-19 15:53:00,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:53:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851283890] [2021-11-19 15:53:00,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851283890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:53:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1933084055] [2021-11-19 15:53:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:00,924 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:53:00,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:53:00,925 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:53:00,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f22a23-2b5c-48fa-b80c-0789b7cb3d86/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 15:53:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:53:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-11-19 15:53:03,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2021-11-19 15:53:04,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1933084055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:04,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:53:04,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-19 15:53:04,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775273431] [2021-11-19 15:53:04,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:04,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:53:04,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:53:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:53:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:53:04,118 INFO L87 Difference]: Start difference. First operand 44558 states and 64113 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 4 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61)