./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.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_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/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_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/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_9511736f-a2fd-478a-8003-f26b9d94dd3f/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 c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:16:20,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:20,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:21,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:21,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:21,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:21,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:21,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:21,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:21,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:21,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:21,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:21,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:21,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:21,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:21,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:21,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:21,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:21,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:21,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:21,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:21,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:21,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:21,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:21,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:21,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:21,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:21,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:21,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:21,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:21,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:21,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:21,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:21,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:21,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:21,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:21,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:21,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:21,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:21,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:21,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:21,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:16:21,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:21,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:21,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:21,148 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:21,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:21,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:21,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:16:21,149 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:21,149 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:21,149 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:16:21,150 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:16:21,150 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:21,150 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:16:21,150 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:16:21,152 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:16:21,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:21,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:16:21,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:21,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:21,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:21,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:21,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:21,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:21,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:21,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:21,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:21,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:21,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:21,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:21,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:21,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:21,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:16:21,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:16:21,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:21,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:21,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:21,160 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc [2021-11-07 01:16:21,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:21,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:21,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:21,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:21,481 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:21,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-07 01:16:21,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/365bf080a/a63037225fb6455a8811e189433ad78f/FLAG9dd9dad2b [2021-11-07 01:16:22,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:16:22,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-07 01:16:22,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/365bf080a/a63037225fb6455a8811e189433ad78f/FLAG9dd9dad2b [2021-11-07 01:16:22,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/365bf080a/a63037225fb6455a8811e189433ad78f [2021-11-07 01:16:22,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:16:22,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:16:22,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:22,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:16:22,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:16:22,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:22" (1/1) ... [2021-11-07 01:16:22,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664b8146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:22, skipping insertion in model container [2021-11-07 01:16:22,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:22" (1/1) ... [2021-11-07 01:16:22,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:16:23,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:23,591 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-07 01:16:23,591 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-07 01:16:23,944 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-07 01:16:24,621 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 01:16:24,644 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 01:16:24,972 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 01:16:25,070 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 01:16:25,073 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 01:16:25,082 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 01:16:25,083 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 01:16:25,086 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 01:16:25,243 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 01:16:25,244 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 01:16:25,461 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 01:16:25,466 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 01:16:25,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:25,660 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 01:16:25,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50a97634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:25, skipping insertion in model container [2021-11-07 01:16:25,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:25,662 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:16:25,664 INFO L168 Benchmark]: Toolchain (without parser) took 2773.64 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 86.7 MB in the beginning and 83.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:25,665 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 92.6 MB in the end (delta: 62.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:16:25,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2768.06 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 86.4 MB in the beginning and 83.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:25,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 92.6 MB in the end (delta: 62.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2768.06 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 86.4 MB in the beginning and 83.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4795]: 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/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_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/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_9511736f-a2fd-478a-8003-f26b9d94dd3f/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 c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:16:27,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:27,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:28,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:28,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:28,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:28,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:28,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:28,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:28,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:28,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:28,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:28,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:28,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:28,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:28,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:28,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:28,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:28,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:28,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:28,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:28,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:28,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:28,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:28,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:28,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:28,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:28,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:28,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:28,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:28,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:28,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:28,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:28,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:28,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:28,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:28,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:28,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:28,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:28,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:28,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:28,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:16:28,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:28,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:28,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:28,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:28,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:28,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:28,130 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:28,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:28,131 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:28,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:28,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:28,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:28,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:28,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:28,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:28,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:16:28,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:16:28,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:28,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:28,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:28,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:28,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:16:28,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:28,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:28,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:28,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:28,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:28,138 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:16:28,139 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:28,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:28,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:28,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:28,140 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc [2021-11-07 01:16:28,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:28,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:28,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:28,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:28,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:28,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-07 01:16:28,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/b19630d8f/5087abbc3aea465988092acf4974bd70/FLAG7ac730c07 [2021-11-07 01:16:29,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:16:29,630 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-07 01:16:29,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/b19630d8f/5087abbc3aea465988092acf4974bd70/FLAG7ac730c07 [2021-11-07 01:16:30,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/data/b19630d8f/5087abbc3aea465988092acf4974bd70 [2021-11-07 01:16:30,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:16:30,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:16:30,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:30,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:16:30,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:16:30,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:30" (1/1) ... [2021-11-07 01:16:30,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bbda99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:30, skipping insertion in model container [2021-11-07 01:16:30,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:30" (1/1) ... [2021-11-07 01:16:30,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:16:30,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:30,836 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-07 01:16:30,836 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-07 01:16:31,378 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-07 01:16:33,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:33,282 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:16:33,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:33,469 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-07 01:16:33,469 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-07 01:16:33,483 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-07 01:16:33,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:33,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:16:34,026 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-07 01:16:34,027 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-07 01:16:34,036 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_9511736f-a2fd-478a-8003-f26b9d94dd3f/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-07 01:16:34,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:34,612 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:16:34,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34 WrapperNode [2021-11-07 01:16:34,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:34,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:16:34,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:16:34,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:16:34,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:34,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:39,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:16:39,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:16:39,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:16:39,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:16:39,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:39,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:40,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:40,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:43,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:43,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:44,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:44,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:16:44,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:16:44,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:16:44,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:16:44,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (1/1) ... [2021-11-07 01:16:44,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:16:44,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:16:44,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:16:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:16:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:16:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:16:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:16:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure serial_dl_write [2021-11-07 01:16:44,824 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_dl_write [2021-11-07 01:16:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_start_tx [2021-11-07 01:16:44,824 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_start_tx [2021-11-07 01:16:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_16550a [2021-11-07 01:16:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_16550a [2021-11-07 01:16:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_tx_complete [2021-11-07 01:16:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_tx_complete [2021-11-07 01:16:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:16:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure broken_efr [2021-11-07 01:16:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_efr [2021-11-07 01:16:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 01:16:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 01:16:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:16:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 01:16:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_dma [2021-11-07 01:16:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_dma [2021-11-07 01:16:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:16:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:16:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:16:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:16:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:16:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:16:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:16:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:16:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:16:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:16:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_termios [2021-11-07 01:16:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_termios [2021-11-07 01:16:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~VOID [2021-11-07 01:16:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~VOID [2021-11-07 01:16:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:16:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_pm [2021-11-07 01:16:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_pm [2021-11-07 01:16:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig [2021-11-07 01:16:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig [2021-11-07 01:16:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:16:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:16:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 01:16:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:16:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:16:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure dma_async_issue_pending [2021-11-07 01:16:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_async_issue_pending [2021-11-07 01:16:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_config_port [2021-11-07 01:16:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_config_port [2021-11-07 01:16:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_has_efr [2021-11-07 01:16:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_has_efr [2021-11-07 01:16:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure size_fifo [2021-11-07 01:16:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure size_fifo [2021-11-07 01:16:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:16:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:24:55,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:24:55,088 INFO L299 CfgBuilder]: Removed 33708 assume(true) statements. [2021-11-07 01:24:55,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:55 BoogieIcfgContainer [2021-11-07 01:24:55,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:24:55,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:24:55,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:24:55,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:24:55,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:30" (1/3) ... [2021-11-07 01:24:55,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e68faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:55, skipping insertion in model container [2021-11-07 01:24:55,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:34" (2/3) ... [2021-11-07 01:24:55,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e68faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:24:55, skipping insertion in model container [2021-11-07 01:24:55,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:24:55" (3/3) ... [2021-11-07 01:24:55,117 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-07 01:24:55,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:24:55,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:24:55,291 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:24:55,301 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 01:24:55,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:24:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 23493 states, 23392 states have (on average 1.3334473324213407) internal successors, (31192), 23411 states have internal predecessors, (31192), 73 states have call successors, (73), 17 states have call predecessors, (73), 17 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-07 01:24:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:24:55,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:55,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:55,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -551569268, now seen corresponding path program 1 times [2021-11-07 01:24:55,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:55,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175946008] [2021-11-07 01:24:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:55,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:55,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:55,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:25:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:06,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 4958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:06,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:07,810 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 01:25:07,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:08,529 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 01:25:08,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:08,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175946008] [2021-11-07 01:25:08,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175946008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:08,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:08,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:25:08,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117320924] [2021-11-07 01:25:08,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:08,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:08,605 INFO L87 Difference]: Start difference. First operand has 23493 states, 23392 states have (on average 1.3334473324213407) internal successors, (31192), 23411 states have internal predecessors, (31192), 73 states have call successors, (73), 17 states have call predecessors, (73), 17 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 01:25:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:37,936 INFO L93 Difference]: Finished difference Result 47005 states and 62741 transitions. [2021-11-07 01:25:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:25:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 01:25:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:38,146 INFO L225 Difference]: With dead ends: 47005 [2021-11-07 01:25:38,146 INFO L226 Difference]: Without dead ends: 23411 [2021-11-07 01:25:38,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 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 01:25:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23411 states. [2021-11-07 01:25:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23411 to 23411. [2021-11-07 01:25:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23411 states, 23311 states have (on average 1.3243962077988933) internal successors, (30873), 23329 states have internal predecessors, (30873), 73 states have call successors, (73), 17 states have call predecessors, (73), 17 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-07 01:25:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23411 states to 23411 states and 31019 transitions. [2021-11-07 01:25:39,523 INFO L78 Accepts]: Start accepts. Automaton has 23411 states and 31019 transitions. Word has length 84 [2021-11-07 01:25:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:39,532 INFO L470 AbstractCegarLoop]: Abstraction has 23411 states and 31019 transitions. [2021-11-07 01:25:39,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 01:25:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 23411 states and 31019 transitions. [2021-11-07 01:25:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:25:39,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:39,603 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:39,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:39,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1229471124, now seen corresponding path program 1 times [2021-11-07 01:25:39,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:39,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146834728] [2021-11-07 01:25:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:39,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:39,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:39,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:25:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:52,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 4968 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:52,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:53,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:54,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:54,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146834728] [2021-11-07 01:25:54,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146834728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:54,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [147822695] [2021-11-07 01:25:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:54,810 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:54,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:54,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:54,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:25:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:59,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 4968 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:59,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:00,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:00,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [147822695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:00,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:00,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:00,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827253293] [2021-11-07 01:26:00,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:00,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:00,852 INFO L87 Difference]: Start difference. First operand 23411 states and 31019 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:26:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:05,675 INFO L93 Difference]: Finished difference Result 58894 states and 78092 transitions. [2021-11-07 01:26:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 86 [2021-11-07 01:26:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:06,085 INFO L225 Difference]: With dead ends: 58894 [2021-11-07 01:26:06,086 INFO L226 Difference]: Without dead ends: 35505 [2021-11-07 01:26:06,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35505 states. [2021-11-07 01:26:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35505 to 35495. [2021-11-07 01:26:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35495 states, 35359 states have (on average 1.3259707570915467) internal successors, (46885), 35379 states have internal predecessors, (46885), 104 states have call successors, (104), 22 states have call predecessors, (104), 22 states have return successors, (104), 102 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 01:26:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35495 states to 35495 states and 47093 transitions. [2021-11-07 01:26:07,574 INFO L78 Accepts]: Start accepts. Automaton has 35495 states and 47093 transitions. Word has length 86 [2021-11-07 01:26:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 35495 states and 47093 transitions. [2021-11-07 01:26:07,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:26:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 35495 states and 47093 transitions. [2021-11-07 01:26:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:26:07,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:07,656 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:07,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:08,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:08,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:08,071 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:08,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 840437457, now seen corresponding path program 1 times [2021-11-07 01:26:08,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:08,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587617838] [2021-11-07 01:26:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:08,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:08,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:08,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:26:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:21,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 4983 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:21,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:22,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:23,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:23,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587617838] [2021-11-07 01:26:23,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587617838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:23,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [563745924] [2021-11-07 01:26:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:23,250 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:23,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:23,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:26:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:27,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 4983 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:27,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:28,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:30,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [563745924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:30,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:30,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:30,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243199095] [2021-11-07 01:26:30,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:30,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:30,009 INFO L87 Difference]: Start difference. First operand 35495 states and 47093 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 01:26:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:33,216 INFO L93 Difference]: Finished difference Result 53064 states and 70758 transitions. [2021-11-07 01:26:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 86 [2021-11-07 01:26:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:33,431 INFO L225 Difference]: With dead ends: 53064 [2021-11-07 01:26:33,432 INFO L226 Difference]: Without dead ends: 53044 [2021-11-07 01:26:33,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53044 states. [2021-11-07 01:26:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53044 to 49027. [2021-11-07 01:26:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49027 states, 48827 states have (on average 1.3291621438957955) internal successors, (64899), 48825 states have internal predecessors, (64899), 157 states have call successors, (157), 36 states have call predecessors, (157), 37 states have return successors, (240), 178 states have call predecessors, (240), 157 states have call successors, (240) [2021-11-07 01:26:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49027 states to 49027 states and 65296 transitions. [2021-11-07 01:26:35,480 INFO L78 Accepts]: Start accepts. Automaton has 49027 states and 65296 transitions. Word has length 86 [2021-11-07 01:26:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:35,481 INFO L470 AbstractCegarLoop]: Abstraction has 49027 states and 65296 transitions. [2021-11-07 01:26:35,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 01:26:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 49027 states and 65296 transitions. [2021-11-07 01:26:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:26:35,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:35,564 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:35,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:35,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:35,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:35,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1118632422, now seen corresponding path program 1 times [2021-11-07 01:26:36,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:36,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804533705] [2021-11-07 01:26:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:36,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:36,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:36,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:26:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:48,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 5011 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:48,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:49,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:50,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:50,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804533705] [2021-11-07 01:26:50,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804533705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:50,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1244760236] [2021-11-07 01:26:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:50,067 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:50,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:50,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:50,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:26:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 5011 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:26:54,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:55,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:55,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1244760236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:55,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:55,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:26:55,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919040649] [2021-11-07 01:26:55,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:55,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:26:55,967 INFO L87 Difference]: Start difference. First operand 49027 states and 65296 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 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 01:27:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:00,043 INFO L93 Difference]: Finished difference Result 165781 states and 221251 transitions. [2021-11-07 01:27:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:00,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 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 89 [2021-11-07 01:27:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:00,754 INFO L225 Difference]: With dead ends: 165781 [2021-11-07 01:27:00,755 INFO L226 Difference]: Without dead ends: 116776 [2021-11-07 01:27:00,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:27:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116776 states. [2021-11-07 01:27:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116776 to 95941. [2021-11-07 01:27:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95941 states, 95549 states have (on average 1.3285957990141184) internal successors, (126946), 95540 states have internal predecessors, (126946), 312 states have call successors, (312), 72 states have call predecessors, (312), 74 states have return successors, (663), 354 states have call predecessors, (663), 312 states have call successors, (663) [2021-11-07 01:27:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95941 states to 95941 states and 127921 transitions. [2021-11-07 01:27:05,451 INFO L78 Accepts]: Start accepts. Automaton has 95941 states and 127921 transitions. Word has length 89 [2021-11-07 01:27:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 95941 states and 127921 transitions. [2021-11-07 01:27:05,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 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 01:27:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 95941 states and 127921 transitions. [2021-11-07 01:27:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 01:27:05,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:05,550 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:05,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:05,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:05,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:05,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:27:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1891538141, now seen corresponding path program 1 times [2021-11-07 01:27:05,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:05,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663471404] [2021-11-07 01:27:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:05,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:05,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:06,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:27:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:18,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 5016 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:18,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:18,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:20,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:20,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663471404] [2021-11-07 01:27:20,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663471404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:20,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1977160422] [2021-11-07 01:27:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:20,300 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:20,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:20,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:27:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:24,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 5016 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:27:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:27:25,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:27:26,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1977160422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:26,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:26,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:27:26,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568081821] [2021-11-07 01:27:26,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:26,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:26,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:26,424 INFO L87 Difference]: Start difference. First operand 95941 states and 127921 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 01:27:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:34,246 INFO L93 Difference]: Finished difference Result 325293 states and 434984 transitions. [2021-11-07 01:27:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:27:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 90 [2021-11-07 01:27:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:35,249 INFO L225 Difference]: With dead ends: 325293 [2021-11-07 01:27:35,249 INFO L226 Difference]: Without dead ends: 229374 [2021-11-07 01:27:35,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:27:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229374 states. [2021-11-07 01:27:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229374 to 187904. [2021-11-07 01:27:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187904 states, 187130 states have (on average 1.3280874258536846) internal successors, (248525), 187107 states have internal predecessors, (248525), 620 states have call successors, (620), 144 states have call predecessors, (620), 148 states have return successors, (1828), 704 states have call predecessors, (1828), 620 states have call successors, (1828) [2021-11-07 01:27:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187904 states to 187904 states and 250973 transitions. [2021-11-07 01:27:44,981 INFO L78 Accepts]: Start accepts. Automaton has 187904 states and 250973 transitions. Word has length 90 [2021-11-07 01:27:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:44,982 INFO L470 AbstractCegarLoop]: Abstraction has 187904 states and 250973 transitions. [2021-11-07 01:27:44,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 01:27:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 187904 states and 250973 transitions. [2021-11-07 01:27:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 01:27:45,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:45,065 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:45,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:45,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:27:45,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:45,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:27:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1304980554, now seen corresponding path program 1 times [2021-11-07 01:27:45,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:45,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098973021] [2021-11-07 01:27:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:45,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:45,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:45,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:27:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:56,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 5018 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:56,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:57,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:58,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:58,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098973021] [2021-11-07 01:27:58,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098973021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:58,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1740513264] [2021-11-07 01:27:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:58,849 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:58,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:58,852 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9511736f-a2fd-478a-8003-f26b9d94dd3f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process