./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8 --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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:51,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:51,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:51,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:51,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:51,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:51,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:51,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:51,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:51,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:51,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:51,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:51,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:51,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:51,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:51,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:51,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:51,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:51,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:51,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:51,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:51,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:51,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:51,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:51,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:51,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:51,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:51,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:51,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:51,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:51,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:51,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:51,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:51,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:51,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:51,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:51,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:51,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:51,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:51,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:51,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:51,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:19:51,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:51,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:51,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:51,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:51,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:51,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:51,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:19:51,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:51,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:51,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:19:51,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:19:51,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:51,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:19:51,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:19:51,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:19:51,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:51,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:19:51,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:51,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:51,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:51,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:51,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:51,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:51,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:51,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:51,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:51,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:51,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:51,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:51,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:51,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:51,125 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:19:51,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:19:51,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:51,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:51,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:51,126 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_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-07 01:19:51,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:51,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:51,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:51,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:51,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:51,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-07 01:19:51,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/1e2de3dd1/2baf25a608a0460ab28ecf9099a89a3f/FLAG68dabe9c2 [2021-11-07 01:19:52,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:52,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-07 01:19:52,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/1e2de3dd1/2baf25a608a0460ab28ecf9099a89a3f/FLAG68dabe9c2 [2021-11-07 01:19:52,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/1e2de3dd1/2baf25a608a0460ab28ecf9099a89a3f [2021-11-07 01:19:52,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:52,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:52,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:52,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:52,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:52,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:52,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4d305c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52, skipping insertion in model container [2021-11-07 01:19:52,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:52,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:53,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:54,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-07 01:19:54,400 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,602 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,719 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,769 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,815 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,821 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,829 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,836 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,849 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,856 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,871 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,882 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,921 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,927 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,931 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,932 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,933 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:54,983 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:19:55,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:55,036 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) [2021-11-07 01:19:55,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11ef8224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:55, skipping insertion in model container [2021-11-07 01:19:55,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:55,037 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:19:55,039 INFO L168 Benchmark]: Toolchain (without parser) took 2094.78 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 68.0 MB in the beginning and 50.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:55,040 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:55,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2092.33 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 67.6 MB in the beginning and 50.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:55,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2092.33 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 67.6 MB in the beginning and 50.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5369]: 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_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8 --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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:57,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:57,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:57,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:57,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:57,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:57,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:57,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:57,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:57,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:57,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:57,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:57,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:57,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:57,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:57,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:57,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:57,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:57,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:57,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:57,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:57,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:57,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:57,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:57,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:57,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:57,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:57,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:57,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:57,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:57,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:57,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:57,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:57,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:57,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:57,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:57,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:57,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:57,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:57,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:57,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:57,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:19:57,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:57,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:57,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:57,553 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:57,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:57,554 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:57,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:57,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:57,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:57,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:57,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:57,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:57,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:57,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:57,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:57,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:19:57,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:19:57,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:57,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:57,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:57,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:57,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:19:57,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:57,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:57,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:57,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:57,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:57,561 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:19:57,562 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:19:57,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:57,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:57,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:57,563 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_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-07 01:19:57,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:57,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:57,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:57,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:57,972 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:57,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-07 01:19:58,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/a85df7203/beb249784b9e45a197faf08e027640c5/FLAGdb2331963 [2021-11-07 01:19:59,106 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:59,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-07 01:19:59,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/a85df7203/beb249784b9e45a197faf08e027640c5/FLAGdb2331963 [2021-11-07 01:19:59,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/data/a85df7203/beb249784b9e45a197faf08e027640c5 [2021-11-07 01:19:59,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:59,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:59,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:59,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:59,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:59,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:59" (1/1) ... [2021-11-07 01:19:59,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cec843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:59, skipping insertion in model container [2021-11-07 01:19:59,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:59" (1/1) ... [2021-11-07 01:19:59,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:59,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:01,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-07 01:20:01,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:01,923 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:20:02,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:02,153 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-07 01:20:02,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:02,473 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:02,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-07 01:20:02,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:03,002 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:03,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03 WrapperNode [2021-11-07 01:20:03,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:03,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:03,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:03,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:03,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:03,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:03,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:03,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:03,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:03,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:03,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:03,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:03,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:03,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:04,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:04,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:04,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:04,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:04,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:04,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:04,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:04,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (1/1) ... [2021-11-07 01:20:04,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:04,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:04,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:04,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:20:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:20:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:20:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:20:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:20:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:20:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:20:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:20:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:20:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:20:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:20:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:20:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:20:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:20:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:20:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-11-07 01:20:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-11-07 01:20:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:20:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-11-07 01:20:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-11-07 01:20:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:22:31,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:22:31,470 INFO L299 CfgBuilder]: Removed 2483 assume(true) statements. [2021-11-07 01:22:31,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:31 BoogieIcfgContainer [2021-11-07 01:22:31,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:22:31,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:22:31,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:22:31,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:22:31,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:59" (1/3) ... [2021-11-07 01:22:31,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a843f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:31, skipping insertion in model container [2021-11-07 01:22:31,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:03" (2/3) ... [2021-11-07 01:22:31,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a843f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:31, skipping insertion in model container [2021-11-07 01:22:31,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:31" (3/3) ... [2021-11-07 01:22:31,485 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-07 01:22:31,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:22:31,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:22:31,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:22:31,565 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 [2021-11-07 01:22:31,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:22:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 2934 states, 2921 states have (on average 1.4912701129750086) internal successors, (4356), 2922 states have internal predecessors, (4356), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-07 01:22:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:22:31,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:31,640 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:31,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:22:31,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1567644133, now seen corresponding path program 1 times [2021-11-07 01:22:31,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:31,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398636633] [2021-11-07 01:22:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:31,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:31,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:31,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:22:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:37,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:38,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:38,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:38,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398636633] [2021-11-07 01:22:38,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398636633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:38,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:38,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:38,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663820787] [2021-11-07 01:22:38,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:38,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:38,366 INFO L87 Difference]: Start difference. First operand has 2934 states, 2921 states have (on average 1.4912701129750086) internal successors, (4356), 2922 states have internal predecessors, (4356), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:41,714 INFO L93 Difference]: Finished difference Result 11608 states and 17345 transitions. [2021-11-07 01:22:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:41,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 01:22:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:41,801 INFO L225 Difference]: With dead ends: 11608 [2021-11-07 01:22:41,801 INFO L226 Difference]: Without dead ends: 8663 [2021-11-07 01:22:41,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8663 states. [2021-11-07 01:22:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8663 to 8663. [2021-11-07 01:22:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 8629 states have (on average 1.405261328079731) internal successors, (12126), 8629 states have internal predecessors, (12126), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 01:22:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 12174 transitions. [2021-11-07 01:22:42,297 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 12174 transitions. Word has length 23 [2021-11-07 01:22:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:42,297 INFO L470 AbstractCegarLoop]: Abstraction has 8663 states and 12174 transitions. [2021-11-07 01:22:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 12174 transitions. [2021-11-07 01:22:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:22:42,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:42,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:42,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:42,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:42,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:22:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1181508299, now seen corresponding path program 1 times [2021-11-07 01:22:42,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:42,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382499688] [2021-11-07 01:22:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:42,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:42,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:42,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:22:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:48,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:22:48,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:48,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:48,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:48,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382499688] [2021-11-07 01:22:48,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382499688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:48,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:48,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:22:48,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155810580] [2021-11-07 01:22:48,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:22:48,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:22:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:22:48,871 INFO L87 Difference]: Start difference. First operand 8663 states and 12174 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:56,632 INFO L93 Difference]: Finished difference Result 25951 states and 36527 transitions. [2021-11-07 01:22:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:22:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 01:22:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:56,781 INFO L225 Difference]: With dead ends: 25951 [2021-11-07 01:22:56,783 INFO L226 Difference]: Without dead ends: 17298 [2021-11-07 01:22:56,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:22:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2021-11-07 01:22:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 16854. [2021-11-07 01:22:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16854 states, 16787 states have (on average 1.4045987966879132) internal successors, (23579), 16787 states have internal predecessors, (23579), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:22:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16854 states to 16854 states and 23699 transitions. [2021-11-07 01:22:57,497 INFO L78 Accepts]: Start accepts. Automaton has 16854 states and 23699 transitions. Word has length 25 [2021-11-07 01:22:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:57,497 INFO L470 AbstractCegarLoop]: Abstraction has 16854 states and 23699 transitions. [2021-11-07 01:22:57,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16854 states and 23699 transitions. [2021-11-07 01:22:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:22:57,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:57,520 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:22:57,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:57,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:57,746 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:22:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -345488039, now seen corresponding path program 1 times [2021-11-07 01:22:57,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:57,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211686370] [2021-11-07 01:22:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:57,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:57,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:57,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:57,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:04,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:23:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:04,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:04,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:04,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211686370] [2021-11-07 01:23:04,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211686370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:04,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:04,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:23:04,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126692511] [2021-11-07 01:23:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:04,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:04,957 INFO L87 Difference]: Start difference. First operand 16854 states and 23699 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:15,465 INFO L93 Difference]: Finished difference Result 51462 states and 72493 transitions. [2021-11-07 01:23:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:23:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:15,617 INFO L225 Difference]: With dead ends: 51462 [2021-11-07 01:23:15,617 INFO L226 Difference]: Without dead ends: 34626 [2021-11-07 01:23:15,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:23:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34626 states. [2021-11-07 01:23:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34626 to 16854. [2021-11-07 01:23:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16854 states, 16787 states have (on average 1.4031691189611009) internal successors, (23555), 16787 states have internal predecessors, (23555), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:23:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16854 states to 16854 states and 23675 transitions. [2021-11-07 01:23:16,820 INFO L78 Accepts]: Start accepts. Automaton has 16854 states and 23675 transitions. Word has length 66 [2021-11-07 01:23:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:16,820 INFO L470 AbstractCegarLoop]: Abstraction has 16854 states and 23675 transitions. [2021-11-07 01:23:16,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 16854 states and 23675 transitions. [2021-11-07 01:23:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:23:16,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:16,836 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:23:16,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:17,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:23:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2010317211, now seen corresponding path program 1 times [2021-11-07 01:23:17,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:17,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016645846] [2021-11-07 01:23:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:17,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:17,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:17,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:17,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:23,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:23:23,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:23,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:24,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:24,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016645846] [2021-11-07 01:23:24,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016645846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:24,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:24,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:24,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080371453] [2021-11-07 01:23:24,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:24,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:24,197 INFO L87 Difference]: Start difference. First operand 16854 states and 23675 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:27,288 INFO L93 Difference]: Finished difference Result 66068 states and 93382 transitions. [2021-11-07 01:23:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:23:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:27,483 INFO L225 Difference]: With dead ends: 66068 [2021-11-07 01:23:27,483 INFO L226 Difference]: Without dead ends: 49232 [2021-11-07 01:23:27,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49232 states. [2021-11-07 01:23:28,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49232 to 17106. [2021-11-07 01:23:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17106 states, 17039 states have (on average 1.397206408826809) internal successors, (23807), 17039 states have internal predecessors, (23807), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:23:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 23927 transitions. [2021-11-07 01:23:29,026 INFO L78 Accepts]: Start accepts. Automaton has 17106 states and 23927 transitions. Word has length 66 [2021-11-07 01:23:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:29,028 INFO L470 AbstractCegarLoop]: Abstraction has 17106 states and 23927 transitions. [2021-11-07 01:23:29,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 17106 states and 23927 transitions. [2021-11-07 01:23:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:23:29,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:29,055 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:23:29,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:29,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:29,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:23:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1501166351, now seen corresponding path program 1 times [2021-11-07 01:23:29,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:29,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804714094] [2021-11-07 01:23:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:29,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:29,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:29,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:23:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:36,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:36,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:36,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804714094] [2021-11-07 01:23:36,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804714094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:36,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:36,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:23:36,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271324176] [2021-11-07 01:23:36,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:23:36,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:23:36,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:36,371 INFO L87 Difference]: Start difference. First operand 17106 states and 23927 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:19,724 INFO L93 Difference]: Finished difference Result 65904 states and 92530 transitions. [2021-11-07 01:24:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:24:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 01:24:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:19,925 INFO L225 Difference]: With dead ends: 65904 [2021-11-07 01:24:19,925 INFO L226 Difference]: Without dead ends: 48816 [2021-11-07 01:24:19,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:24:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48816 states. [2021-11-07 01:24:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48816 to 17376. [2021-11-07 01:24:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 17309 states have (on average 1.392743659367959) internal successors, (24107), 17309 states have internal predecessors, (24107), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:24:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 24227 transitions. [2021-11-07 01:24:21,352 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 24227 transitions. Word has length 69 [2021-11-07 01:24:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:21,352 INFO L470 AbstractCegarLoop]: Abstraction has 17376 states and 24227 transitions. [2021-11-07 01:24:21,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 24227 transitions. [2021-11-07 01:24:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:24:21,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:21,370 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:24:21,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:21,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:21,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:24:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2127307688, now seen corresponding path program 1 times [2021-11-07 01:24:21,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:21,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338070814] [2021-11-07 01:24:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:21,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:21,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:21,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:24:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:28,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:24:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:29,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:30,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:30,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338070814] [2021-11-07 01:24:30,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338070814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:30,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:30,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-07 01:24:30,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112062248] [2021-11-07 01:24:30,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:24:30,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:24:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:24:30,289 INFO L87 Difference]: Start difference. First operand 17376 states and 24227 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:02,867 INFO L93 Difference]: Finished difference Result 169694 states and 239905 transitions. [2021-11-07 01:25:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 01:25:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:25:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:03,538 INFO L225 Difference]: With dead ends: 169694 [2021-11-07 01:25:03,538 INFO L226 Difference]: Without dead ends: 152336 [2021-11-07 01:25:03,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:25:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152336 states. [2021-11-07 01:25:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152336 to 17592. [2021-11-07 01:25:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17592 states, 17525 states have (on average 1.380713266761769) internal successors, (24197), 17525 states have internal predecessors, (24197), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:25:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17592 states to 17592 states and 24317 transitions. [2021-11-07 01:25:06,493 INFO L78 Accepts]: Start accepts. Automaton has 17592 states and 24317 transitions. Word has length 70 [2021-11-07 01:25:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:06,493 INFO L470 AbstractCegarLoop]: Abstraction has 17592 states and 24317 transitions. [2021-11-07 01:25:06,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17592 states and 24317 transitions. [2021-11-07 01:25:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:25:06,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:06,509 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:25:06,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:06,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:06,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1450543640, now seen corresponding path program 1 times [2021-11-07 01:25:06,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:06,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587375453] [2021-11-07 01:25:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:06,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:06,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:06,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:06,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:25:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:13,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:13,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:13,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:14,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:14,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587375453] [2021-11-07 01:25:14,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587375453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:14,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:14,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:25:14,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701678933] [2021-11-07 01:25:14,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:14,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:14,022 INFO L87 Difference]: Start difference. First operand 17592 states and 24317 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:19,264 INFO L93 Difference]: Finished difference Result 47262 states and 65427 transitions. [2021-11-07 01:25:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:25:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:25:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:19,333 INFO L225 Difference]: With dead ends: 47262 [2021-11-07 01:25:19,333 INFO L226 Difference]: Without dead ends: 29688 [2021-11-07 01:25:19,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2021-11-07 01:25:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 19272. [2021-11-07 01:25:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19272 states, 19205 states have (on average 1.3724030200468629) internal successors, (26357), 19205 states have internal predecessors, (26357), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-07 01:25:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19272 states to 19272 states and 26477 transitions. [2021-11-07 01:25:21,475 INFO L78 Accepts]: Start accepts. Automaton has 19272 states and 26477 transitions. Word has length 77 [2021-11-07 01:25:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:21,475 INFO L470 AbstractCegarLoop]: Abstraction has 19272 states and 26477 transitions. [2021-11-07 01:25:21,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19272 states and 26477 transitions. [2021-11-07 01:25:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:25:21,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:21,494 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:25:21,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:21,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:21,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1854551135, now seen corresponding path program 1 times [2021-11-07 01:25:21,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:21,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939120949] [2021-11-07 01:25:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:21,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:21,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:21,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:21,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:25:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:28,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:25:28,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:29,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:29,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:29,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939120949] [2021-11-07 01:25:29,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939120949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:29,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:29,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:25:29,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027280764] [2021-11-07 01:25:29,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:25:29,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:25:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:29,623 INFO L87 Difference]: Start difference. First operand 19272 states and 26477 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:46,200 INFO L93 Difference]: Finished difference Result 93948 states and 128637 transitions. [2021-11-07 01:25:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:25:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:25:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:46,446 INFO L225 Difference]: With dead ends: 93948 [2021-11-07 01:25:46,446 INFO L226 Difference]: Without dead ends: 74694 [2021-11-07 01:25:46,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74694 states. [2021-11-07 01:25:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74694 to 28694. [2021-11-07 01:25:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28694 states, 28573 states have (on average 1.3598852063136528) internal successors, (38856), 28573 states have internal predecessors, (38856), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (174), 84 states have call predecessors, (174), 84 states have call successors, (174) [2021-11-07 01:25:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28694 states to 28694 states and 39114 transitions. [2021-11-07 01:25:50,185 INFO L78 Accepts]: Start accepts. Automaton has 28694 states and 39114 transitions. Word has length 84 [2021-11-07 01:25:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:50,185 INFO L470 AbstractCegarLoop]: Abstraction has 28694 states and 39114 transitions. [2021-11-07 01:25:50,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 28694 states and 39114 transitions. [2021-11-07 01:25:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:25:50,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:50,206 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:25:50,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:50,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:50,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2006687075, now seen corresponding path program 1 times [2021-11-07 01:25:50,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:50,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020233711] [2021-11-07 01:25:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:50,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:50,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:50,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:25:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:57,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:57,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:57,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:58,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:58,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020233711] [2021-11-07 01:25:58,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020233711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:58,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:58,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:25:58,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189633513] [2021-11-07 01:25:58,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:58,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:58,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:58,069 INFO L87 Difference]: Start difference. First operand 28694 states and 39114 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:12,573 INFO L93 Difference]: Finished difference Result 80610 states and 109719 transitions. [2021-11-07 01:26:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:12,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:26:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:12,696 INFO L225 Difference]: With dead ends: 80610 [2021-11-07 01:26:12,697 INFO L226 Difference]: Without dead ends: 51934 [2021-11-07 01:26:12,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:26:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51934 states. [2021-11-07 01:26:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51934 to 28712. [2021-11-07 01:26:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28712 states, 28591 states have (on average 1.3596586338358225) internal successors, (38874), 28591 states have internal predecessors, (38874), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (174), 84 states have call predecessors, (174), 84 states have call successors, (174) [2021-11-07 01:26:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28712 states to 28712 states and 39132 transitions. [2021-11-07 01:26:16,492 INFO L78 Accepts]: Start accepts. Automaton has 28712 states and 39132 transitions. Word has length 84 [2021-11-07 01:26:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:16,492 INFO L470 AbstractCegarLoop]: Abstraction has 28712 states and 39132 transitions. [2021-11-07 01:26:16,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:16,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28712 states and 39132 transitions. [2021-11-07 01:26:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:26:16,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:16,512 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:26:16,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:16,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:16,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:26:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash 259694111, now seen corresponding path program 1 times [2021-11-07 01:26:16,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:16,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404677038] [2021-11-07 01:26:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:16,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:16,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092b672-1429-455d-a6d8-bf2bf7600399/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:26:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:23,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:26:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:23,701 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-07 01:26:23,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 20 [2021-11-07 01:26:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:26,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:28,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:28,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404677038] [2021-11-07 01:26:28,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404677038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:28,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:28,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:26:28,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3338522] [2021-11-07 01:26:28,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:26:28,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:26:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=26, Unknown=2, NotChecked=0, Total=42 [2021-11-07 01:26:28,644 INFO L87 Difference]: Start difference. First operand 28712 states and 39132 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:29,253 INFO L93 Difference]: Finished difference Result 58954 states and 80475 transitions. [2021-11-07 01:33:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:33:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:33:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:29,305 INFO L225 Difference]: With dead ends: 58954 [2021-11-07 01:33:29,305 INFO L226 Difference]: Without dead ends: 30260 [2021-11-07 01:33:29,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=20, Invalid=34, Unknown=2, NotChecked=0, Total=56 [2021-11-07 01:33:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30260 states.