./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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 abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:20:06,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:20:06,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:20:06,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:20:06,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:20:06,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:20:06,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:20:06,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:20:06,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:20:06,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:20:06,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:20:06,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:20:06,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:20:06,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:20:06,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:20:06,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:20:06,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:20:06,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:20:06,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:20:06,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:20:06,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:20:06,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:20:06,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:20:06,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:20:06,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:20:06,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:20:06,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:20:06,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:20:06,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:20:06,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:20:06,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:20:06,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:20:06,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:20:06,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:20:06,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:20:06,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:20:06,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:20:06,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:20:06,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:20:06,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:20:06,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:20:06,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:20:06,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:20:06,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:20:06,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:20:06,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:20:06,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:20:06,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:20:06,758 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:20:06,758 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:20:06,758 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:20:06,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:20:06,759 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:20:06,759 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:20:06,759 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:20:06,759 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:20:06,760 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:20:06,760 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:20:06,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:20:06,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:20:06,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:20:06,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:20:06,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:20:06,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:20:06,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:20:06,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:20:06,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:20:06,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:20:06,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:20:06,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:20:06,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:06,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:20:06,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:20:06,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:20:06,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:20:06,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:20:06,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:20:06,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:20:06,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:20:06,779 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-19 13:20:07,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:20:07,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:20:07,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:20:07,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:20:07,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:20:07,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-19 13:20:07,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3748c0e43/1fa556b7b4d340f5972f57c8020becbe/FLAGadcac26a7 [2021-11-19 13:20:08,451 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:08,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-19 13:20:08,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3748c0e43/1fa556b7b4d340f5972f57c8020becbe/FLAGadcac26a7 [2021-11-19 13:20:08,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3748c0e43/1fa556b7b4d340f5972f57c8020becbe [2021-11-19 13:20:08,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:08,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:08,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:08,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:08,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:08,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:08" (1/1) ... [2021-11-19 13:20:08,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eecfc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:08, skipping insertion in model container [2021-11-19 13:20:08,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:08" (1/1) ... [2021-11-19 13:20:08,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:08,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:11,987 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:20:12,238 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:20:12,240 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:20:13,914 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-19 13:20:13,918 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-19 13:20:13,959 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:14,086 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 13:20:14,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4005bc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:14, skipping insertion in model container [2021-11-19 13:20:14,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:14,088 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:20:14,090 INFO L158 Benchmark]: Toolchain (without parser) took 5433.73ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 62.2MB in the beginning and 73.9MB in the end (delta: -11.7MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2021-11-19 13:20:14,091 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:20:14,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5430.76ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 61.9MB in the beginning and 73.9MB in the end (delta: -12.0MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2021-11-19 13:20:14,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5430.76ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 61.9MB in the beginning and 73.9MB in the end (delta: -12.0MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6616]: 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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 abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:20:16,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:20:16,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:20:16,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:20:16,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:20:16,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:20:16,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:20:16,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:20:16,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:20:17,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:20:17,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:20:17,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:20:17,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:20:17,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:20:17,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:20:17,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:20:17,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:20:17,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:20:17,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:20:17,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:20:17,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:20:17,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:20:17,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:20:17,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:20:17,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:20:17,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:20:17,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:20:17,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:20:17,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:20:17,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:20:17,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:20:17,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:20:17,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:20:17,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:20:17,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:20:17,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:20:17,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:20:17,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:20:17,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:20:17,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:20:17,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:20:17,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:20:17,158 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:20:17,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:20:17,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:20:17,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:20:17,161 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:20:17,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:20:17,162 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:20:17,162 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:20:17,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:20:17,163 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:20:17,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:20:17,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:20:17,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:20:17,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:20:17,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:20:17,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:20:17,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:20:17,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:20:17,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:20:17,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:20:17,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:20:17,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:20:17,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:20:17,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:20:17,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:17,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:20:17,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:20:17,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:20:17,171 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:20:17,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:20:17,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:20:17,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:20:17,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:20:17,173 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-19 13:20:17,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:20:17,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:20:17,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:20:17,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:20:17,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:20:17,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-19 13:20:17,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3ff41ea05/b26a383718904afc8e53287d477f19c0/FLAG6c3899d6f [2021-11-19 13:20:19,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:19,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-19 13:20:19,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3ff41ea05/b26a383718904afc8e53287d477f19c0/FLAG6c3899d6f [2021-11-19 13:20:19,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/data/3ff41ea05/b26a383718904afc8e53287d477f19c0 [2021-11-19 13:20:19,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:19,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:19,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:19,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:19,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:19,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:19" (1/1) ... [2021-11-19 13:20:19,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1635b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:19, skipping insertion in model container [2021-11-19 13:20:19,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:19" (1/1) ... [2021-11-19 13:20:19,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:19,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:24,741 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-19 13:20:24,745 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-19 13:20:24,783 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:24,885 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:20:24,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:20:25,716 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-19 13:20:25,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-19 13:20:25,725 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:25,751 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:20:26,600 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-19 13:20:26,601 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_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-19 13:20:26,612 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:20:27,055 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:20:27,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27 WrapperNode [2021-11-19 13:20:27,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:27,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:20:27,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:20:27,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:20:27,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,624 INFO L137 Inliner]: procedures = 570, calls = 2944, calls flagged for inlining = 291, calls inlined = 260, statements flattened = 7247 [2021-11-19 13:20:27,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:20:27,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:20:27,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:20:27,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:20:27,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:27,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:28,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:28,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:28,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:20:28,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:20:28,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:20:28,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:20:28,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (1/1) ... [2021-11-19 13:20:28,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:20:28,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:20:28,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:20:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-19 13:20:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-19 13:20:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:20:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:20:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 13:20:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 13:20:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 13:20:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 13:20:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_86 [2021-11-19 13:20:28,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_86 [2021-11-19 13:20:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:20:28,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:20:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 13:20:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 13:20:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 13:20:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 13:20:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 13:20:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 13:20:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2021-11-19 13:20:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2021-11-19 13:20:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 13:20:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 13:20:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 13:20:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 13:20:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:20:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:20:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 13:20:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 13:20:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 13:20:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 13:20:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:20:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:20:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 13:20:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 13:20:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:20:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:20:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:20:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2021-11-19 13:20:28,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2021-11-19 13:20:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:20:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:20:28,268 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:20:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 13:20:28,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 13:20:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_INT~TO~~u16~0 [2021-11-19 13:20:28,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_INT~TO~~u16~0 [2021-11-19 13:20:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2021-11-19 13:20:28,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2021-11-19 13:20:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 13:20:28,272 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 13:20:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 13:20:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 13:20:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:20:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:20:28,274 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2021-11-19 13:20:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2021-11-19 13:20:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 13:20:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 13:20:28,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-19 13:20:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-19 13:20:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:20:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:20:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2021-11-19 13:20:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2021-11-19 13:20:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 13:20:28,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 13:20:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:20:28,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:20:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:20:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:20:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 13:20:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 13:20:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 13:20:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 13:20:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 13:20:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 13:20:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2021-11-19 13:20:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2021-11-19 13:20:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-19 13:20:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-19 13:20:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:20:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 13:20:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 13:20:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 13:20:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 13:20:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-19 13:20:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-19 13:20:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-19 13:20:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-19 13:20:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-19 13:20:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-19 13:20:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-19 13:20:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-19 13:20:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2021-11-19 13:20:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2021-11-19 13:20:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:20:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-19 13:20:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-19 13:20:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:20:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:20:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:20:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:20:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:20:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 13:20:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:20:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:20:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:20:28,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:20:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2021-11-19 13:20:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2021-11-19 13:20:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:20:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:20:28,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:20:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 13:20:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 13:20:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-11-19 13:20:28,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-11-19 13:20:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-19 13:20:28,300 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-19 13:20:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2021-11-19 13:20:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2021-11-19 13:20:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 13:20:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 13:20:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-19 13:20:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-19 13:20:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:20:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:20:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 13:20:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 13:20:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 13:20:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 13:20:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2021-11-19 13:20:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2021-11-19 13:20:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 13:20:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 13:20:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:20:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2021-11-19 13:20:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2021-11-19 13:20:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 13:20:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 13:20:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:20:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:20:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:20:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 13:20:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 13:20:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:20:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:20:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:20:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:20:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:20:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:20:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:20:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2021-11-19 13:20:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2021-11-19 13:20:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2021-11-19 13:20:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2021-11-19 13:20:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2021-11-19 13:20:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2021-11-19 13:20:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-19 13:20:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 13:20:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 13:20:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2021-11-19 13:20:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2021-11-19 13:20:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2021-11-19 13:20:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2021-11-19 13:20:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 13:20:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 13:20:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:20:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:20:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-19 13:20:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-19 13:20:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 13:20:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 13:20:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 13:20:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 13:20:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2021-11-19 13:20:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2021-11-19 13:20:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2021-11-19 13:20:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2021-11-19 13:20:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2021-11-19 13:20:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2021-11-19 13:20:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2021-11-19 13:20:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2021-11-19 13:20:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 13:20:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 13:20:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2021-11-19 13:20:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2021-11-19 13:20:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:20:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 13:20:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 13:20:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:20:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-11-19 13:20:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-11-19 13:20:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:20:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:20:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:20:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:20:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:20:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2021-11-19 13:20:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2021-11-19 13:20:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2021-11-19 13:20:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2021-11-19 13:20:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-19 13:20:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-19 13:20:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:20:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:20:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2021-11-19 13:20:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2021-11-19 13:20:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:20:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:20:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2021-11-19 13:20:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2021-11-19 13:20:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-19 13:20:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-19 13:20:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 13:20:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 13:20:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2021-11-19 13:20:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2021-11-19 13:20:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2021-11-19 13:20:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2021-11-19 13:20:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2021-11-19 13:20:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2021-11-19 13:20:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 13:20:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 13:20:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 13:20:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 13:20:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 13:20:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 13:20:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2021-11-19 13:20:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2021-11-19 13:20:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 13:20:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 13:20:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2021-11-19 13:20:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2021-11-19 13:20:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2021-11-19 13:20:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2021-11-19 13:20:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 13:20:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 13:20:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:20:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:20:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2021-11-19 13:20:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2021-11-19 13:20:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:20:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:20:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:20:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:20:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:20:28,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:20:28,341 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 13:20:28,342 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 13:20:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-19 13:20:28,342 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-19 13:20:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2021-11-19 13:20:28,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2021-11-19 13:20:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2021-11-19 13:20:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2021-11-19 13:20:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-19 13:20:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-19 13:20:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2021-11-19 13:20:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2021-11-19 13:20:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_INT~X~~u16~0~TO~VOID [2021-11-19 13:20:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_INT~X~~u16~0~TO~VOID [2021-11-19 13:20:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:20:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:20:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 13:20:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 13:20:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 13:20:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 13:20:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 13:20:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 13:20:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 13:20:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 13:20:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-19 13:20:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-19 13:20:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-19 13:20:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-11-19 13:20:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-19 13:20:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-19 13:20:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:20:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:20:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 13:20:28,347 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 13:20:30,070 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:20:30,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:20:31,369 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:21:39,826 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 13:21:40,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:21:40,163 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:21:40,165 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-19 13:21:40,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:40 BoogieIcfgContainer [2021-11-19 13:21:40,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:21:40,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:21:40,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:21:40,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:21:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:20:19" (1/3) ... [2021-11-19 13:21:40,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c86d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:40, skipping insertion in model container [2021-11-19 13:21:40,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:27" (2/3) ... [2021-11-19 13:21:40,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c86d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:40, skipping insertion in model container [2021-11-19 13:21:40,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:40" (3/3) ... [2021-11-19 13:21:40,187 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-19 13:21:40,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:21:40,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:21:40,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:21:40,326 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 13:21:40,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:21:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 2696 states, 1873 states have (on average 1.3027229044313935) internal successors, (2440), 1913 states have internal predecessors, (2440), 700 states have call successors, (700), 125 states have call predecessors, (700), 124 states have return successors, (692), 679 states have call predecessors, (692), 692 states have call successors, (692) [2021-11-19 13:21:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 13:21:40,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:40,500 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:40,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash 530235293, now seen corresponding path program 1 times [2021-11-19 13:21:40,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:40,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154904597] [2021-11-19 13:21:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:40,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:40,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:40,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:21:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:43,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:21:43,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-19 13:21:44,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-11-19 13:21:45,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:45,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154904597] [2021-11-19 13:21:45,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154904597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:45,945 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:45,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:21:45,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92961426] [2021-11-19 13:21:45,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:45,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:45,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:46,001 INFO L87 Difference]: Start difference. First operand has 2696 states, 1873 states have (on average 1.3027229044313935) internal successors, (2440), 1913 states have internal predecessors, (2440), 700 states have call successors, (700), 125 states have call predecessors, (700), 124 states have return successors, (692), 679 states have call predecessors, (692), 692 states have call successors, (692) Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-11-19 13:21:48,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:05,085 INFO L93 Difference]: Finished difference Result 10155 states and 14630 transitions. [2021-11-19 13:22:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 258 [2021-11-19 13:22:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:05,193 INFO L225 Difference]: With dead ends: 10155 [2021-11-19 13:22:05,193 INFO L226 Difference]: Without dead ends: 7272 [2021-11-19 13:22:05,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:05,238 INFO L933 BasicCegarLoop]: 5591 mSDtfsCounter, 8841 mSDsluCounter, 5762 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 1174 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8841 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:05,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8841 Valid, 11353 Invalid, 2622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1174 Valid, 1447 Invalid, 1 Unknown, 0 Unchecked, 18.1s Time] [2021-11-19 13:22:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-11-19 13:22:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7266. [2021-11-19 13:22:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 5098 states have (on average 1.2928599450765006) internal successors, (6591), 5200 states have internal predecessors, (6591), 1817 states have call successors, (1817), 350 states have call predecessors, (1817), 350 states have return successors, (1817), 1782 states have call predecessors, (1817), 1817 states have call successors, (1817) [2021-11-19 13:22:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 10225 transitions. [2021-11-19 13:22:06,093 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 10225 transitions. Word has length 258 [2021-11-19 13:22:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:06,095 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 10225 transitions. [2021-11-19 13:22:06,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-11-19 13:22:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 10225 transitions. [2021-11-19 13:22:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-19 13:22:06,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:06,122 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:06,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:06,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1237833833, now seen corresponding path program 1 times [2021-11-19 13:22:06,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:06,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211722579] [2021-11-19 13:22:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:06,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:06,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:06,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:06,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:22:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:08,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:08,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-19 13:22:10,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-11-19 13:22:11,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:11,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211722579] [2021-11-19 13:22:11,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211722579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:11,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:11,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:22:11,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106329114] [2021-11-19 13:22:11,345 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:11,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:22:11,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:22:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:22:11,349 INFO L87 Difference]: Start difference. First operand 7266 states and 10225 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-19 13:22:13,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:14,897 INFO L93 Difference]: Finished difference Result 19433 states and 27253 transitions. [2021-11-19 13:22:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:22:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 268 [2021-11-19 13:22:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:15,052 INFO L225 Difference]: With dead ends: 19433 [2021-11-19 13:22:15,052 INFO L226 Difference]: Without dead ends: 12198 [2021-11-19 13:22:15,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 533 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 13:22:15,111 INFO L933 BasicCegarLoop]: 4151 mSDtfsCounter, 2677 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:15,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2677 Valid, 7713 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 13:22:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12198 states. [2021-11-19 13:22:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12198 to 12191. [2021-11-19 13:22:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12191 states, 8556 states have (on average 1.2952314165497896) internal successors, (11082), 8711 states have internal predecessors, (11082), 2981 states have call successors, (2981), 655 states have call predecessors, (2981), 653 states have return successors, (2988), 2910 states have call predecessors, (2988), 2981 states have call successors, (2988) [2021-11-19 13:22:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 17051 transitions. [2021-11-19 13:22:16,219 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 17051 transitions. Word has length 268 [2021-11-19 13:22:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:16,220 INFO L470 AbstractCegarLoop]: Abstraction has 12191 states and 17051 transitions. [2021-11-19 13:22:16,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-19 13:22:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 17051 transitions. [2021-11-19 13:22:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-19 13:22:16,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:16,253 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2021-11-19 13:22:16,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:16,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:16,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:16,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1073062096, now seen corresponding path program 1 times [2021-11-19 13:22:16,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:16,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396841330] [2021-11-19 13:22:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:16,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:16,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:16,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:22:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:19,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:19,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2021-11-19 13:22:23,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2021-11-19 13:22:25,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:25,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396841330] [2021-11-19 13:22:25,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396841330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:25,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:25,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 13:22:25,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390372497] [2021-11-19 13:22:25,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:25,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:25,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:25,055 INFO L87 Difference]: Start difference. First operand 12191 states and 17051 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-19 13:22:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:25,965 INFO L93 Difference]: Finished difference Result 24351 states and 34058 transitions. [2021-11-19 13:22:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:22:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Word has length 358 [2021-11-19 13:22:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:26,115 INFO L225 Difference]: With dead ends: 24351 [2021-11-19 13:22:26,116 INFO L226 Difference]: Without dead ends: 12191 [2021-11-19 13:22:26,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:26,216 INFO L933 BasicCegarLoop]: 3665 mSDtfsCounter, 3603 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3603 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:26,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3603 Valid, 3665 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:22:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-11-19 13:22:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12191. [2021-11-19 13:22:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12191 states, 8556 states have (on average 1.2945301542777) internal successors, (11076), 8711 states have internal predecessors, (11076), 2981 states have call successors, (2981), 655 states have call predecessors, (2981), 653 states have return successors, (2988), 2910 states have call predecessors, (2988), 2981 states have call successors, (2988) [2021-11-19 13:22:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 17045 transitions. [2021-11-19 13:22:27,320 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 17045 transitions. Word has length 358 [2021-11-19 13:22:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:27,322 INFO L470 AbstractCegarLoop]: Abstraction has 12191 states and 17045 transitions. [2021-11-19 13:22:27,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-19 13:22:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 17045 transitions. [2021-11-19 13:22:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-19 13:22:27,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:27,355 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2021-11-19 13:22:27,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:27,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:27,571 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1147672046, now seen corresponding path program 1 times [2021-11-19 13:22:27,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:27,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699470900] [2021-11-19 13:22:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:27,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:27,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:27,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:27,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:22:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:30,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:30,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-11-19 13:22:32,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2021-11-19 13:22:33,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:33,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699470900] [2021-11-19 13:22:33,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699470900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:33,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:33,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:33,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564266272] [2021-11-19 13:22:33,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:33,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:33,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:33,565 INFO L87 Difference]: Start difference. First operand 12191 states and 17045 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 13:22:35,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:22:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:50,550 INFO L93 Difference]: Finished difference Result 33034 states and 46040 transitions. [2021-11-19 13:22:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:50,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 358 [2021-11-19 13:22:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:50,678 INFO L225 Difference]: With dead ends: 33034 [2021-11-19 13:22:50,678 INFO L226 Difference]: Without dead ends: 20874 [2021-11-19 13:22:50,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:50,728 INFO L933 BasicCegarLoop]: 6124 mSDtfsCounter, 7820 mSDsluCounter, 5513 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 870 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7820 SdHoareTripleChecker+Valid, 11637 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:50,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7820 Valid, 11637 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 1410 Invalid, 1 Unknown, 0 Unchecked, 15.7s Time] [2021-11-19 13:22:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20874 states. [2021-11-19 13:22:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20874 to 20866. [2021-11-19 13:22:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20866 states, 14648 states have (on average 1.2927362097214636) internal successors, (18936), 14907 states have internal predecessors, (18936), 5029 states have call successors, (5029), 1190 states have call predecessors, (5029), 1188 states have return successors, (5038), 4910 states have call predecessors, (5038), 5029 states have call successors, (5038) [2021-11-19 13:22:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 29003 transitions. [2021-11-19 13:22:52,505 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 29003 transitions. Word has length 358 [2021-11-19 13:22:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:52,507 INFO L470 AbstractCegarLoop]: Abstraction has 20866 states and 29003 transitions. [2021-11-19 13:22:52,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-19 13:22:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 29003 transitions. [2021-11-19 13:22:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-19 13:22:52,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:52,799 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 13, 13, 13, 13, 13, 13, 9, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:52,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:53,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:53,007 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -623826835, now seen corresponding path program 1 times [2021-11-19 13:22:53,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:53,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942464150] [2021-11-19 13:22:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:53,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:53,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:53,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:53,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:22:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:56,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:56,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2021-11-19 13:22:57,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2021-11-19 13:22:59,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:59,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942464150] [2021-11-19 13:22:59,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942464150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:59,053 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:59,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:59,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197290609] [2021-11-19 13:22:59,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:59,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:59,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:59,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:59,057 INFO L87 Difference]: Start difference. First operand 20866 states and 29003 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-19 13:23:01,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:15,113 INFO L93 Difference]: Finished difference Result 49207 states and 68472 transitions. [2021-11-19 13:23:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 437 [2021-11-19 13:23:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:15,277 INFO L225 Difference]: With dead ends: 49207 [2021-11-19 13:23:15,278 INFO L226 Difference]: Without dead ends: 28372 [2021-11-19 13:23:15,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:23:15,355 INFO L933 BasicCegarLoop]: 7423 mSDtfsCounter, 6829 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 604 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6829 SdHoareTripleChecker+Valid, 12941 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:15,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6829 Valid, 12941 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1413 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2021-11-19 13:23:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28372 states. [2021-11-19 13:23:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28372 to 28364. [2021-11-19 13:23:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28364 states, 19958 states have (on average 1.295019541036176) internal successors, (25846), 20305 states have internal predecessors, (25846), 6815 states have call successors, (6815), 1592 states have call predecessors, (6815), 1590 states have return successors, (6826), 6656 states have call predecessors, (6826), 6815 states have call successors, (6826) [2021-11-19 13:23:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28364 states to 28364 states and 39487 transitions. [2021-11-19 13:23:17,383 INFO L78 Accepts]: Start accepts. Automaton has 28364 states and 39487 transitions. Word has length 437 [2021-11-19 13:23:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 28364 states and 39487 transitions. [2021-11-19 13:23:17,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-19 13:23:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 28364 states and 39487 transitions. [2021-11-19 13:23:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-19 13:23:17,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:17,441 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 13, 13, 13, 13, 13, 13, 10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:23:17,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:17,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:17,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 152672314, now seen corresponding path program 1 times [2021-11-19 13:23:17,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:17,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602360332] [2021-11-19 13:23:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:17,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:17,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:17,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:17,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:23:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:20,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:23:20,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-11-19 13:23:21,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2021-11-19 13:23:23,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:23,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602360332] [2021-11-19 13:23:23,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602360332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:23,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:23,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:23:23,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822672182] [2021-11-19 13:23:23,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:23,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:23:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:23:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:23:23,292 INFO L87 Difference]: Start difference. First operand 28364 states and 39487 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-19 13:23:25,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:23:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:37,706 INFO L93 Difference]: Finished difference Result 64206 states and 89456 transitions. [2021-11-19 13:23:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 446 [2021-11-19 13:23:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:37,890 INFO L225 Difference]: With dead ends: 64206 [2021-11-19 13:23:37,890 INFO L226 Difference]: Without dead ends: 35873 [2021-11-19 13:23:37,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:23:37,978 INFO L933 BasicCegarLoop]: 7413 mSDtfsCounter, 6820 mSDsluCounter, 6049 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6820 SdHoareTripleChecker+Valid, 13462 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:37,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6820 Valid, 13462 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1415 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2021-11-19 13:23:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-11-19 13:23:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 35865. [2021-11-19 13:23:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35865 states, 25274 states have (on average 1.2966685130964628) internal successors, (32772), 25709 states have internal predecessors, (32772), 8599 states have call successors, (8599), 1993 states have call predecessors, (8599), 1991 states have return successors, (8612), 8400 states have call predecessors, (8612), 8599 states have call successors, (8612) [2021-11-19 13:23:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35865 states to 35865 states and 49983 transitions. [2021-11-19 13:23:40,581 INFO L78 Accepts]: Start accepts. Automaton has 35865 states and 49983 transitions. Word has length 446 [2021-11-19 13:23:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:40,583 INFO L470 AbstractCegarLoop]: Abstraction has 35865 states and 49983 transitions. [2021-11-19 13:23:40,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-19 13:23:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 35865 states and 49983 transitions. [2021-11-19 13:23:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-19 13:23:40,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:40,634 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:40,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:40,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:40,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2039562479, now seen corresponding path program 1 times [2021-11-19 13:23:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:40,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740388753] [2021-11-19 13:23:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:40,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:40,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:40,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:23:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:43,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:23:43,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2021-11-19 13:23:46,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2021-11-19 13:23:48,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:48,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740388753] [2021-11-19 13:23:48,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740388753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:48,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:23:48,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-19 13:23:48,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256637774] [2021-11-19 13:23:48,480 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:48,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:23:48,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:23:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:23:48,483 INFO L87 Difference]: Start difference. First operand 35865 states and 49983 transitions. Second operand has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-19 13:23:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:59,171 INFO L93 Difference]: Finished difference Result 90701 states and 128884 transitions. [2021-11-19 13:23:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:23:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) Word has length 480 [2021-11-19 13:23:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:59,521 INFO L225 Difference]: With dead ends: 90701 [2021-11-19 13:23:59,521 INFO L226 Difference]: Without dead ends: 54867 [2021-11-19 13:23:59,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:23:59,684 INFO L933 BasicCegarLoop]: 5697 mSDtfsCounter, 3882 mSDsluCounter, 35432 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 41129 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:59,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4140 Valid, 41129 Invalid, 1927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1033 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 13:23:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54867 states. [2021-11-19 13:24:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54867 to 35871. [2021-11-19 13:24:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35871 states, 25280 states have (on average 1.2959651898734177) internal successors, (32762), 25715 states have internal predecessors, (32762), 8599 states have call successors, (8599), 1993 states have call predecessors, (8599), 1991 states have return successors, (8612), 8400 states have call predecessors, (8612), 8599 states have call successors, (8612) [2021-11-19 13:24:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35871 states to 35871 states and 49973 transitions. [2021-11-19 13:24:03,978 INFO L78 Accepts]: Start accepts. Automaton has 35871 states and 49973 transitions. Word has length 480 [2021-11-19 13:24:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:03,980 INFO L470 AbstractCegarLoop]: Abstraction has 35871 states and 49973 transitions. [2021-11-19 13:24:03,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-19 13:24:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35871 states and 49973 transitions. [2021-11-19 13:24:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-19 13:24:04,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:04,018 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:04,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:04,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:04,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1143331309, now seen corresponding path program 1 times [2021-11-19 13:24:04,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:04,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49517763] [2021-11-19 13:24:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:04,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:04,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:04,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:04,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:24:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:07,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:24:07,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2021-11-19 13:24:11,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2021-11-19 13:24:13,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:13,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49517763] [2021-11-19 13:24:13,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49517763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:13,995 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:24:13,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-19 13:24:13,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952574230] [2021-11-19 13:24:13,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:13,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:24:13,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:24:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:24:13,999 INFO L87 Difference]: Start difference. First operand 35871 states and 49973 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2021-11-19 13:24:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:15,754 INFO L93 Difference]: Finished difference Result 59864 states and 82984 transitions. [2021-11-19 13:24:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:24:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 480 [2021-11-19 13:24:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:15,890 INFO L225 Difference]: With dead ends: 59864 [2021-11-19 13:24:15,891 INFO L226 Difference]: Without dead ends: 24024 [2021-11-19 13:24:16,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 957 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 13:24:16,032 INFO L933 BasicCegarLoop]: 3637 mSDtfsCounter, 3553 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:16,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3553 Valid, 3637 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:24:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24024 states. [2021-11-19 13:24:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24024 to 24024. [2021-11-19 13:24:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24024 states, 16829 states have (on average 1.281537821617446) internal successors, (21567), 17168 states have internal predecessors, (21567), 5733 states have call successors, (5733), 1463 states have call predecessors, (5733), 1461 states have return successors, (5737), 5590 states have call predecessors, (5737), 5733 states have call successors, (5737) [2021-11-19 13:24:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24024 states to 24024 states and 33037 transitions. [2021-11-19 13:24:17,994 INFO L78 Accepts]: Start accepts. Automaton has 24024 states and 33037 transitions. Word has length 480 [2021-11-19 13:24:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:17,995 INFO L470 AbstractCegarLoop]: Abstraction has 24024 states and 33037 transitions. [2021-11-19 13:24:17,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2021-11-19 13:24:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 24024 states and 33037 transitions. [2021-11-19 13:24:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-19 13:24:18,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:18,018 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 13, 13, 13, 13, 13, 13, 12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:18,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:18,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:18,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 211757486, now seen corresponding path program 1 times [2021-11-19 13:24:18,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:18,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131351262] [2021-11-19 13:24:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:18,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:18,225 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:24:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:20,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:24:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 407 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2021-11-19 13:24:23,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2021-11-19 13:24:26,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:26,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131351262] [2021-11-19 13:24:26,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131351262] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:24:26,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:24:26,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-19 13:24:26,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744158925] [2021-11-19 13:24:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:26,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:24:26,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:24:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:24:26,844 INFO L87 Difference]: Start difference. First operand 24024 states and 33037 transitions. Second operand has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2021-11-19 13:24:29,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:19,276 INFO L93 Difference]: Finished difference Result 99498 states and 140749 transitions. [2021-11-19 13:25:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 13:25:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) Word has length 502 [2021-11-19 13:25:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:19,665 INFO L225 Difference]: With dead ends: 99498 [2021-11-19 13:25:19,665 INFO L226 Difference]: Without dead ends: 75501 [2021-11-19 13:25:19,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=350, Invalid=1812, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 13:25:19,947 INFO L933 BasicCegarLoop]: 5878 mSDtfsCounter, 19888 mSDsluCounter, 51397 mSDsCounter, 0 mSdLazyCounter, 5792 mSolverCounterSat, 5100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19918 SdHoareTripleChecker+Valid, 57275 SdHoareTripleChecker+Invalid, 10893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5100 IncrementalHoareTripleChecker+Valid, 5792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:19,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19918 Valid, 57275 Invalid, 10893 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5100 Valid, 5792 Invalid, 1 Unknown, 0 Unchecked, 43.3s Time] [2021-11-19 13:25:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75501 states. [2021-11-19 13:25:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75501 to 47886. [2021-11-19 13:25:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47886 states, 33527 states have (on average 1.2813254988516718) internal successors, (42959), 34208 states have internal predecessors, (42959), 11441 states have call successors, (11441), 2921 states have call predecessors, (11441), 2917 states have return successors, (11449), 11148 states have call predecessors, (11449), 11441 states have call successors, (11449) [2021-11-19 13:25:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47886 states to 47886 states and 65849 transitions. [2021-11-19 13:25:24,079 INFO L78 Accepts]: Start accepts. Automaton has 47886 states and 65849 transitions. Word has length 502 [2021-11-19 13:25:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:24,081 INFO L470 AbstractCegarLoop]: Abstraction has 47886 states and 65849 transitions. [2021-11-19 13:25:24,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2021-11-19 13:25:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 47886 states and 65849 transitions. [2021-11-19 13:25:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-19 13:25:24,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:24,133 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 13, 13, 13, 13, 13, 13, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:24,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:24,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:24,346 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2141258047, now seen corresponding path program 1 times [2021-11-19 13:25:24,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:24,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799614353] [2021-11-19 13:25:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:24,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:24,350 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:25:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:26,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2021-11-19 13:25:28,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2021-11-19 13:25:30,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:30,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799614353] [2021-11-19 13:25:30,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799614353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:30,513 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:25:30,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:25:30,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932121588] [2021-11-19 13:25:30,514 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:30,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:25:30,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:25:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:25:30,516 INFO L87 Difference]: Start difference. First operand 47886 states and 65849 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-19 13:25:32,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:50,656 INFO L93 Difference]: Finished difference Result 100079 states and 137658 transitions. [2021-11-19 13:25:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:25:50,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 515 [2021-11-19 13:25:50,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:50,942 INFO L225 Difference]: With dead ends: 100079 [2021-11-19 13:25:50,942 INFO L226 Difference]: Without dead ends: 52224 [2021-11-19 13:25:51,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:25:51,132 INFO L933 BasicCegarLoop]: 5630 mSDtfsCounter, 6358 mSDsluCounter, 4543 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 583 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6358 SdHoareTripleChecker+Valid, 10173 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:51,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6358 Valid, 10173 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1407 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2021-11-19 13:25:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52224 states. [2021-11-19 13:25:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52224 to 52212. [2021-11-19 13:25:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52212 states, 36581 states have (on average 1.2814029140810803) internal successors, (46875), 37326 states have internal predecessors, (46875), 12459 states have call successors, (12459), 3175 states have call predecessors, (12459), 3171 states have return successors, (12467), 12140 states have call predecessors, (12467), 12459 states have call successors, (12467) [2021-11-19 13:25:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52212 states to 52212 states and 71801 transitions. [2021-11-19 13:25:56,033 INFO L78 Accepts]: Start accepts. Automaton has 52212 states and 71801 transitions. Word has length 515 [2021-11-19 13:25:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:56,034 INFO L470 AbstractCegarLoop]: Abstraction has 52212 states and 71801 transitions. [2021-11-19 13:25:56,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-19 13:25:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 52212 states and 71801 transitions. [2021-11-19 13:25:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2021-11-19 13:25:56,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:56,107 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:56,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 13:25:56,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:56,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash 915330537, now seen corresponding path program 1 times [2021-11-19 13:25:56,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:56,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381240258] [2021-11-19 13:25:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:56,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:56,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:56,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:25:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:59,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:25:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2021-11-19 13:26:02,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2021-11-19 13:26:04,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:04,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381240258] [2021-11-19 13:26:04,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381240258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:04,296 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:04,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:04,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455970871] [2021-11-19 13:26:04,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:04,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:04,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:04,299 INFO L87 Difference]: Start difference. First operand 52212 states and 71801 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2021-11-19 13:26:06,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:19,959 INFO L93 Difference]: Finished difference Result 93791 states and 129075 transitions. [2021-11-19 13:26:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) Word has length 619 [2021-11-19 13:26:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:20,094 INFO L225 Difference]: With dead ends: 93791 [2021-11-19 13:26:20,094 INFO L226 Difference]: Without dead ends: 41582 [2021-11-19 13:26:20,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:20,209 INFO L933 BasicCegarLoop]: 6602 mSDtfsCounter, 5871 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 12333 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5871 Valid, 12333 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1406 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2021-11-19 13:26:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41582 states. [2021-11-19 13:26:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41582 to 41572. [2021-11-19 13:26:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41572 states, 29201 states have (on average 1.282387589466114) internal successors, (37447), 29774 states have internal predecessors, (37447), 9895 states have call successors, (9895), 2477 states have call predecessors, (9895), 2475 states have return successors, (9900), 9653 states have call predecessors, (9900), 9895 states have call successors, (9900) [2021-11-19 13:26:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41572 states to 41572 states and 57242 transitions. [2021-11-19 13:26:23,485 INFO L78 Accepts]: Start accepts. Automaton has 41572 states and 57242 transitions. Word has length 619 [2021-11-19 13:26:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:23,486 INFO L470 AbstractCegarLoop]: Abstraction has 41572 states and 57242 transitions. [2021-11-19 13:26:23,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2021-11-19 13:26:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 41572 states and 57242 transitions. [2021-11-19 13:26:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-11-19 13:26:23,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:23,523 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:23,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:23,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:23,738 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1588727656, now seen corresponding path program 1 times [2021-11-19 13:26:23,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:23,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871966993] [2021-11-19 13:26:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:23,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:23,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:23,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc3ec05-0c8e-40f7-aa1e-3bd2e7a5be34/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:26:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:25,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:26:25,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2021-11-19 13:26:28,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2021-11-19 13:26:31,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:31,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871966993] [2021-11-19 13:26:31,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871966993] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:31,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:31,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 13:26:31,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553653720] [2021-11-19 13:26:31,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:26:31,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:26:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:26:31,303 INFO L87 Difference]: Start difference. First operand 41572 states and 57242 transitions. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 8 states have internal predecessors, (301), 2 states have call successors, (102), 2 states have call predecessors, (102), 6 states have return successors, (98), 6 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-19 13:26:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:39,572 INFO L93 Difference]: Finished difference Result 102669 states and 143985 transitions. [2021-11-19 13:26:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:26:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 8 states have internal predecessors, (301), 2 states have call successors, (102), 2 states have call predecessors, (102), 6 states have return successors, (98), 6 states have call predecessors, (98), 2 states have call successors, (98) Word has length 585 [2021-11-19 13:26:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:39,926 INFO L225 Difference]: With dead ends: 102669 [2021-11-19 13:26:39,926 INFO L226 Difference]: Without dead ends: 61128 [2021-11-19 13:26:40,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:26:40,036 INFO L933 BasicCegarLoop]: 5118 mSDtfsCounter, 2387 mSDsluCounter, 40475 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 45593 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:40,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 45593 Invalid, 496 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [231 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 13:26:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61128 states.