./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:02:51,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:02:51,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:02:52,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:02:52,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:02:52,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:02:52,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:02:52,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:02:52,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:02:52,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:02:52,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:02:52,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:02:52,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:02:52,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:02:52,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:02:52,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:02:52,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:02:52,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:02:52,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:02:52,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:02:52,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:02:52,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:02:52,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:02:52,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:02:52,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:02:52,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:02:52,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:02:52,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:02:52,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:02:52,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:02:52,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:02:52,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:02:52,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:02:52,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:02:52,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:02:52,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:02:52,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:02:52,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:02:52,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:02:52,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:02:52,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:02:52,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:02:52,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:02:52,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:02:52,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:02:52,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:02:52,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:02:52,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:02:52,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:02:52,159 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:02:52,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:02:52,166 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:02:52,167 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:02:52,167 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:02:52,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:02:52,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:02:52,168 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:02:52,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:02:52,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:02:52,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:02:52,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:02:52,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:02:52,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:02:52,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:02:52,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:02:52,170 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:02:52,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:02:52,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:02:52,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:02:52,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:02:52,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:02:52,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:02:52,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:02:52,171 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:02:52,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:02:52,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:02:52,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:02:52,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:02:52,172 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2021-11-07 01:02:52,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:02:52,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:02:52,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:02:52,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:02:52,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:02:52,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-07 01:02:52,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/da9730aee/acfbc3d694064f278c3b110f898d4e06/FLAG88655c2dd [2021-11-07 01:02:53,457 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:02:53,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-07 01:02:53,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/da9730aee/acfbc3d694064f278c3b110f898d4e06/FLAG88655c2dd [2021-11-07 01:02:53,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/da9730aee/acfbc3d694064f278c3b110f898d4e06 [2021-11-07 01:02:53,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:02:53,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:02:53,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:02:53,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:02:53,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:02:53,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:53" (1/1) ... [2021-11-07 01:02:53,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab64832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:53, skipping insertion in model container [2021-11-07 01:02:53,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:53" (1/1) ... [2021-11-07 01:02:53,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:02:54,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:02:56,082 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 01:02:56,085 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 01:02:56,260 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-07 01:02:56,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:02:56,419 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 01:02:56,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@107ccb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:56, skipping insertion in model container [2021-11-07 01:02:56,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:02:56,421 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:02:56,423 INFO L168 Benchmark]: Toolchain (without parser) took 2565.62 ms. Allocated memory was 109.1 MB in the beginning and 157.3 MB in the end (delta: 48.2 MB). Free memory was 80.8 MB in the beginning and 68.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:56,424 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory was 88.0 MB in the beginning and 88.0 MB in the end (delta: 72.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:02:56,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2562.91 ms. Allocated memory was 109.1 MB in the beginning and 157.3 MB in the end (delta: 48.2 MB). Free memory was 80.8 MB in the beginning and 68.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:56,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory was 88.0 MB in the beginning and 88.0 MB in the end (delta: 72.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2562.91 ms. Allocated memory was 109.1 MB in the beginning and 157.3 MB in the end (delta: 48.2 MB). Free memory was 80.8 MB in the beginning and 68.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6576]: 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:02:58,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:02:58,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:02:59,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:02:59,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:02:59,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:02:59,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:02:59,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:02:59,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:02:59,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:02:59,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:02:59,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:02:59,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:02:59,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:02:59,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:02:59,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:02:59,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:02:59,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:02:59,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:02:59,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:02:59,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:02:59,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:02:59,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:02:59,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:02:59,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:02:59,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:02:59,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:02:59,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:02:59,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:02:59,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:02:59,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:02:59,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:02:59,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:02:59,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:02:59,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:02:59,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:02:59,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:02:59,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:02:59,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:02:59,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:02:59,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:02:59,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:02:59,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:02:59,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:02:59,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:02:59,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:02:59,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:02:59,171 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:02:59,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:02:59,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:02:59,172 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:02:59,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:02:59,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:02:59,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:02:59,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:02:59,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:02:59,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:02:59,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:02:59,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:02:59,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:02:59,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:02:59,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:02:59,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:02:59,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:02:59,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:02:59,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:02:59,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:02:59,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:02:59,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:02:59,179 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:02:59,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:59,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:02:59,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:02:59,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:02:59,180 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2021-11-07 01:02:59,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:02:59,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:02:59,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:02:59,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:02:59,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:02:59,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-07 01:02:59,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/0e52dc283/af133dde3dea4236a7cde64bfec0065f/FLAG4a35a1f87 [2021-11-07 01:03:00,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:03:00,891 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-07 01:03:00,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/0e52dc283/af133dde3dea4236a7cde64bfec0065f/FLAG4a35a1f87 [2021-11-07 01:03:01,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/data/0e52dc283/af133dde3dea4236a7cde64bfec0065f [2021-11-07 01:03:01,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:03:01,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:03:01,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:01,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:03:01,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:03:01,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:01" (1/1) ... [2021-11-07 01:03:01,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ee70f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:01, skipping insertion in model container [2021-11-07 01:03:01,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:01" (1/1) ... [2021-11-07 01:03:01,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:03:01,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:03,585 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-07 01:03:03,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:03,745 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:03:03,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:04,399 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-07 01:03:04,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:04,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:03:04,883 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_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-07 01:03:04,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:05,142 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:03:05,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05 WrapperNode [2021-11-07 01:03:05,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:05,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:05,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:03:05,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:03:05,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:05,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:05,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:05,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:03:05,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:03:05,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:03:05,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:05,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:05,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:05,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:06,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:06,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:06,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:06,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:03:06,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:03:06,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:03:06,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:03:06,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (1/1) ... [2021-11-07 01:03:06,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:06,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:03:06,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:03:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:03:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:03:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:03:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:03:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:03:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:03:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-07 01:03:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-07 01:03:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:03:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:03:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:03:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:04:38,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:04:38,894 INFO L299 CfgBuilder]: Removed 4263 assume(true) statements. [2021-11-07 01:04:38,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:38 BoogieIcfgContainer [2021-11-07 01:04:38,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:04:38,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:04:38,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:04:38,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:04:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:01" (1/3) ... [2021-11-07 01:04:38,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f1d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:38, skipping insertion in model container [2021-11-07 01:04:38,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:05" (2/3) ... [2021-11-07 01:04:38,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f1d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:38, skipping insertion in model container [2021-11-07 01:04:38,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:38" (3/3) ... [2021-11-07 01:04:38,908 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-07 01:04:38,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:04:38,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:04:38,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:04:38,981 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 01:04:38,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:04:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 01:04:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:04:39,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:39,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:39,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:04:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash 119318621, now seen corresponding path program 1 times [2021-11-07 01:04:39,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:39,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279464993] [2021-11-07 01:04:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:39,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:39,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:39,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:39,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:04:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:04:45,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:46,132 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 01:04:46,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:46,689 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 01:04:46,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:46,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279464993] [2021-11-07 01:04:46,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279464993] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:46,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:46,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:04:46,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636661177] [2021-11-07 01:04:46,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:04:46,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:46,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:04:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:46,730 INFO L87 Difference]: Start difference. First operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 01:04:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:46,933 INFO L93 Difference]: Finished difference Result 7104 states and 9277 transitions. [2021-11-07 01:04:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:04:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-07 01:04:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:46,975 INFO L225 Difference]: With dead ends: 7104 [2021-11-07 01:04:46,975 INFO L226 Difference]: Without dead ends: 3527 [2021-11-07 01:04:46,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2021-11-07 01:04:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3527. [2021-11-07 01:04:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3519 states have (on average 1.2972435350951974) internal successors, (4565), 3522 states have internal predecessors, (4565), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 01:04:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4571 transitions. [2021-11-07 01:04:47,201 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4571 transitions. Word has length 98 [2021-11-07 01:04:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 3527 states and 4571 transitions. [2021-11-07 01:04:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 01:04:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4571 transitions. [2021-11-07 01:04:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:04:47,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:47,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:47,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:47,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:47,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:04:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 508941543, now seen corresponding path program 1 times [2021-11-07 01:04:47,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:47,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285025867] [2021-11-07 01:04:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:47,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:47,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:47,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:47,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:04:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:53,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:04:53,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:54,257 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 01:04:54,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:54,810 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 01:04:54,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:54,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285025867] [2021-11-07 01:04:54,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285025867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:54,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:54,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:04:54,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185272981] [2021-11-07 01:04:54,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:54,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:54,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:54,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:54,814 INFO L87 Difference]: Start difference. First operand 3527 states and 4571 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 01:04:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:55,756 INFO L93 Difference]: Finished difference Result 7045 states and 9147 transitions. [2021-11-07 01:04:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 98 [2021-11-07 01:04:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:55,780 INFO L225 Difference]: With dead ends: 7045 [2021-11-07 01:04:55,781 INFO L226 Difference]: Without dead ends: 3542 [2021-11-07 01:04:55,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 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 01:04:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-11-07 01:04:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3542. [2021-11-07 01:04:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3534 states have (on average 1.2959818902093945) internal successors, (4580), 3537 states have internal predecessors, (4580), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 01:04:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4586 transitions. [2021-11-07 01:04:55,902 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4586 transitions. Word has length 98 [2021-11-07 01:04:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:55,902 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 4586 transitions. [2021-11-07 01:04:55,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 01:04:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4586 transitions. [2021-11-07 01:04:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 01:04:55,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:55,913 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:55,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:56,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:56,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:04:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1561999385, now seen corresponding path program 1 times [2021-11-07 01:04:56,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:56,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287399608] [2021-11-07 01:04:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:56,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:56,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:56,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:56,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:05:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:02,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:02,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:03,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:03,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:03,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287399608] [2021-11-07 01:05:03,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287399608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:03,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [214833154] [2021-11-07 01:05:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:03,857 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:03,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:03,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:05:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:06,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:06,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:07,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [214833154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:07,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:07,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:07,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213161598] [2021-11-07 01:05:07,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:07,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:07,773 INFO L87 Difference]: Start difference. First operand 3542 states and 4586 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 01:05:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:09,102 INFO L93 Difference]: Finished difference Result 13426 states and 17396 transitions. [2021-11-07 01:05:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:05:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 102 [2021-11-07 01:05:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:09,164 INFO L225 Difference]: With dead ends: 13426 [2021-11-07 01:05:09,164 INFO L226 Difference]: Without dead ends: 9918 [2021-11-07 01:05:09,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2021-11-07 01:05:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9906. [2021-11-07 01:05:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9906 states, 9890 states have (on average 1.2959555106167846) internal successors, (12817), 9893 states have internal predecessors, (12817), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-07 01:05:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9906 states to 9906 states and 12835 transitions. [2021-11-07 01:05:09,555 INFO L78 Accepts]: Start accepts. Automaton has 9906 states and 12835 transitions. Word has length 102 [2021-11-07 01:05:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:09,556 INFO L470 AbstractCegarLoop]: Abstraction has 9906 states and 12835 transitions. [2021-11-07 01:05:09,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 01:05:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9906 states and 12835 transitions. [2021-11-07 01:05:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:05:09,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:09,574 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:09,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:09,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:09,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:09,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:05:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash 76810797, now seen corresponding path program 1 times [2021-11-07 01:05:10,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:10,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044860936] [2021-11-07 01:05:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:10,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:10,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:10,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:05:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:16,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:16,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:17,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:17,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044860936] [2021-11-07 01:05:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044860936] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:17,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [640942309] [2021-11-07 01:05:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:17,576 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:17,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:17,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:17,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:05:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:20,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:20,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:21,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [640942309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:21,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:21,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:21,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056246879] [2021-11-07 01:05:21,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:21,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:21,256 INFO L87 Difference]: Start difference. First operand 9906 states and 12835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 01:05:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:23,199 INFO L93 Difference]: Finished difference Result 37620 states and 48736 transitions. [2021-11-07 01:05:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:05:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 103 [2021-11-07 01:05:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:23,350 INFO L225 Difference]: With dead ends: 37620 [2021-11-07 01:05:23,351 INFO L226 Difference]: Without dead ends: 27748 [2021-11-07 01:05:23,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27748 states. [2021-11-07 01:05:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27748 to 27736. [2021-11-07 01:05:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27736 states, 27696 states have (on average 1.2949162333911035) internal successors, (35864), 27699 states have internal predecessors, (35864), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 01:05:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27736 states to 27736 states and 35918 transitions. [2021-11-07 01:05:24,517 INFO L78 Accepts]: Start accepts. Automaton has 27736 states and 35918 transitions. Word has length 103 [2021-11-07 01:05:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 27736 states and 35918 transitions. [2021-11-07 01:05:24,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 01:05:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 27736 states and 35918 transitions. [2021-11-07 01:05:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:05:24,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:24,529 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:24,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:05:24,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:24,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:24,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:05:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash 495115828, now seen corresponding path program 1 times [2021-11-07 01:05:24,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:24,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772896361] [2021-11-07 01:05:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:24,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:24,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:24,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:05:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:31,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:31,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:31,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:32,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:32,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772896361] [2021-11-07 01:05:32,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772896361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:32,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515585619] [2021-11-07 01:05:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:32,479 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:32,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:32,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:32,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:05:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:35,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:35,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:35,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:36,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515585619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:36,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:36,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:36,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559678505] [2021-11-07 01:05:36,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:36,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:36,474 INFO L87 Difference]: Start difference. First operand 27736 states and 35918 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 01:05:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:39,198 INFO L93 Difference]: Finished difference Result 105160 states and 136112 transitions. [2021-11-07 01:05:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:05:39,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 104 [2021-11-07 01:05:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:39,547 INFO L225 Difference]: With dead ends: 105160 [2021-11-07 01:05:39,547 INFO L226 Difference]: Without dead ends: 77458 [2021-11-07 01:05:39,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77458 states. [2021-11-07 01:05:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77458 to 77446. [2021-11-07 01:05:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77446 states, 77334 states have (on average 1.2934414358496908) internal successors, (100027), 77337 states have internal predecessors, (100027), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-07 01:05:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77446 states to 77446 states and 100189 transitions. [2021-11-07 01:05:42,937 INFO L78 Accepts]: Start accepts. Automaton has 77446 states and 100189 transitions. Word has length 104 [2021-11-07 01:05:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:42,945 INFO L470 AbstractCegarLoop]: Abstraction has 77446 states and 100189 transitions. [2021-11-07 01:05:42,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 01:05:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 77446 states and 100189 transitions. [2021-11-07 01:05:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 01:05:42,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:42,978 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:05:43,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:43,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:43,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:43,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:05:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1546993452, now seen corresponding path program 1 times [2021-11-07 01:05:43,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:43,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684072752] [2021-11-07 01:05:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:43,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:43,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:43,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:43,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:05:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:50,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:50,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:05:51,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:51,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684072752] [2021-11-07 01:05:51,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684072752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:51,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [252674785] [2021-11-07 01:05:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:51,576 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:51,579 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:51,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:05:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:54,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:54,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:05:55,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [252674785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:55,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:55,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:55,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329306298] [2021-11-07 01:05:55,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:55,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:55,562 INFO L87 Difference]: Start difference. First operand 77446 states and 100189 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 01:06:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:02,938 INFO L93 Difference]: Finished difference Result 292668 states and 378344 transitions. [2021-11-07 01:06:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 105 [2021-11-07 01:06:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:03,563 INFO L225 Difference]: With dead ends: 292668 [2021-11-07 01:06:03,563 INFO L226 Difference]: Without dead ends: 215256 [2021-11-07 01:06:03,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215256 states. [2021-11-07 01:06:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215256 to 215244. [2021-11-07 01:06:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215244 states, 214916 states have (on average 1.2916767481248488) internal successors, (277602), 214919 states have internal predecessors, (277602), 243 states have call successors, (243), 81 states have call predecessors, (243), 81 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2021-11-07 01:06:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215244 states to 215244 states and 278088 transitions. [2021-11-07 01:06:13,556 INFO L78 Accepts]: Start accepts. Automaton has 215244 states and 278088 transitions. Word has length 105 [2021-11-07 01:06:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:13,557 INFO L470 AbstractCegarLoop]: Abstraction has 215244 states and 278088 transitions. [2021-11-07 01:06:13,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 01:06:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 215244 states and 278088 transitions. [2021-11-07 01:06:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:06:13,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:13,758 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:13,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:06:13,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:14,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:14,182 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:06:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:14,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1634153412, now seen corresponding path program 1 times [2021-11-07 01:06:14,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:14,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616904448] [2021-11-07 01:06:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:14,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:14,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:14,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:06:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:20,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:20,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:22,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:06:23,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:23,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616904448] [2021-11-07 01:06:23,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616904448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:23,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419901336] [2021-11-07 01:06:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,232 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:23,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:23,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0b9d0e6-c0cf-494e-8f1f-4e6f5223f048/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:06:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:26,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:26,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:06:27,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:06:28,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1419901336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:28,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:28,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:06:28,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861574289] [2021-11-07 01:06:28,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:28,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:28,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:28,628 INFO L87 Difference]: Start difference. First operand 215244 states and 278088 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)