./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-32_7a-drivers--hwmon--abituguru.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_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/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_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/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_f854eee9-ae44-4876-b912-bf66f33e7d54/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 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:04,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:04,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:04,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:04,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:04,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:04,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:04,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:04,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:04,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:04,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:04,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:04,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:04,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:04,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:04,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:04,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:04,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:04,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:04,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:04,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:04,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:04,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:04,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:04,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:04,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:04,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:04,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:04,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:04,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:04,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:04,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:04,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:04,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:04,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:04,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:04,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:04,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:04,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:04,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:04,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:04,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:05,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:05,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:05,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:05,040 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:05,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:05,040 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:05,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:05,041 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:05,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:05,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:05,048 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:05,048 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:05,049 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:05,049 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:05,049 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:05,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:05,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:05,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:05,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:05,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:05,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:05,052 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:05,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:05,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:05,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:05,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:05,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:05,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:05,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:05,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:05,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:05,056 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:05,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:05,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:05,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:05,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:05,057 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_f854eee9-ae44-4876-b912-bf66f33e7d54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-11-07 00:53:05,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:05,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:05,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:05,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:05,344 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:05,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-07 00:53:05,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/aa9e07023/997b1932ea944419a1ef4c58da81258e/FLAGcf1017812 [2021-11-07 00:53:06,285 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:06,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-07 00:53:06,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/aa9e07023/997b1932ea944419a1ef4c58da81258e/FLAGcf1017812 [2021-11-07 00:53:06,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/aa9e07023/997b1932ea944419a1ef4c58da81258e [2021-11-07 00:53:06,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:06,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:06,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:06,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:06,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:06,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:06" (1/1) ... [2021-11-07 00:53:06,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738188d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:06, skipping insertion in model container [2021-11-07 00:53:06,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:06" (1/1) ... [2021-11-07 00:53:06,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:06,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:07,831 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 00:53:07,840 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 00:53:07,852 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 00:53:07,868 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 00:53:07,903 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 00:53:07,909 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 00:53:07,916 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 00:53:07,925 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 00:53:07,939 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 00:53:07,948 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 00:53:07,968 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 00:53:07,981 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 00:53:07,989 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 00:53:07,998 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 00:53:08,029 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 00:53:08,057 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 00:53:08,060 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 00:53:08,076 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 00:53:08,079 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 00:53:08,139 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 00:53:08,140 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 00:53:08,164 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_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-07 00:53:08,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:08,345 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 00:53:08,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a24fe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:08, skipping insertion in model container [2021-11-07 00:53:08,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:08,347 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:08,350 INFO L168 Benchmark]: Toolchain (without parser) took 1557.11 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 48.8 MB in the beginning and 60.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:08,350 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 64.8 MB in the beginning and 64.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:08,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1554.71 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 48.8 MB in the beginning and 60.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:08,355 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 92.3 MB. Free memory was 64.8 MB in the beginning and 64.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1554.71 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 48.8 MB in the beginning and 60.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3798]: 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_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/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_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/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_f854eee9-ae44-4876-b912-bf66f33e7d54/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 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:10,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:10,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:10,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:10,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:10,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:10,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:10,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:10,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:10,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:10,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:10,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:10,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:10,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:10,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:10,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:10,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:10,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:10,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:10,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:10,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:10,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:10,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:10,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:10,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:10,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:10,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:10,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:10,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:10,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:10,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:10,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:10,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:10,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:10,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:10,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:10,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:10,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:10,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:10,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:10,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:10,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:10,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:10,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:10,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:10,754 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:10,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:10,755 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:10,755 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:10,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:10,755 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:10,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:10,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:10,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:10,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:10,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:10,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:10,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:10,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:10,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:10,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:10,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:10,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:10,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:10,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:10,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:10,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:10,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:10,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:10,762 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:10,762 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:10,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:10,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:10,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:10,763 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_f854eee9-ae44-4876-b912-bf66f33e7d54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-11-07 00:53:11,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:11,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:11,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:11,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:11,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:11,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-07 00:53:11,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/6f3647e23/63bf63fd08b3459495ec3a1fa7958ae2/FLAG18e2411d8 [2021-11-07 00:53:11,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:11,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-07 00:53:12,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/6f3647e23/63bf63fd08b3459495ec3a1fa7958ae2/FLAG18e2411d8 [2021-11-07 00:53:12,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/data/6f3647e23/63bf63fd08b3459495ec3a1fa7958ae2 [2021-11-07 00:53:12,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:12,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:12,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:12,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:12,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:12,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:12" (1/1) ... [2021-11-07 00:53:12,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da8866f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:12, skipping insertion in model container [2021-11-07 00:53:12,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:12" (1/1) ... [2021-11-07 00:53:12,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:12,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:14,175 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_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-07 00:53:14,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:14,370 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:14,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:14,664 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_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-07 00:53:14,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:14,718 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:15,005 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_f854eee9-ae44-4876-b912-bf66f33e7d54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-07 00:53:15,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:15,193 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:15,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15 WrapperNode [2021-11-07 00:53:15,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:15,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:15,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:15,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:15,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:15,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:15,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:15,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:15,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:15,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:15,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:15,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:15,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:15,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:16,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:16,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:16,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:16,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:16,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:16,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:16,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:16,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (1/1) ... [2021-11-07 00:53:16,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:16,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:16,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:16,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 00:53:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:16,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:47,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:47,096 INFO L299 CfgBuilder]: Removed 2381 assume(true) statements. [2021-11-07 00:54:47,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:47 BoogieIcfgContainer [2021-11-07 00:54:47,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:47,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:47,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:47,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:47,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:12" (1/3) ... [2021-11-07 00:54:47,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f09d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:47, skipping insertion in model container [2021-11-07 00:54:47,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:15" (2/3) ... [2021-11-07 00:54:47,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f09d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:47, skipping insertion in model container [2021-11-07 00:54:47,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:47" (3/3) ... [2021-11-07 00:54:47,113 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-07 00:54:47,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:47,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 00:54:47,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:47,190 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 00:54:47,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 00:54:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 3163 states, 3153 states have (on average 1.457976530288614) internal successors, (4597), 3162 states have internal predecessors, (4597), 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 00:54:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:54:47,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:47,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:47,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:54:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -449056014, now seen corresponding path program 1 times [2021-11-07 00:54:47,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:47,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711395288] [2021-11-07 00:54:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:47,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:47,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:47,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:47,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:54,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:55,066 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 00:54:55,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:55,282 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 00:54:55,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:55,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711395288] [2021-11-07 00:54:55,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711395288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:55,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:54:55,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634017016] [2021-11-07 00:54:55,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:55,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:55,318 INFO L87 Difference]: Start difference. First operand has 3163 states, 3153 states have (on average 1.457976530288614) internal successors, (4597), 3162 states have internal predecessors, (4597), 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) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 00:55:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:00,472 INFO L93 Difference]: Finished difference Result 12489 states and 18177 transitions. [2021-11-07 00:55:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:00,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 14 [2021-11-07 00:55:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:00,563 INFO L225 Difference]: With dead ends: 12489 [2021-11-07 00:55:00,563 INFO L226 Difference]: Without dead ends: 9313 [2021-11-07 00:55:00,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 00:55:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2021-11-07 00:55:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9289. [2021-11-07 00:55:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9289 states, 9280 states have (on average 1.454094827586207) internal successors, (13494), 9288 states have internal predecessors, (13494), 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 00:55:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 13494 transitions. [2021-11-07 00:55:01,020 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 13494 transitions. Word has length 14 [2021-11-07 00:55:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:01,020 INFO L470 AbstractCegarLoop]: Abstraction has 9289 states and 13494 transitions. [2021-11-07 00:55:01,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 00:55:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 13494 transitions. [2021-11-07 00:55:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:55:01,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:01,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:01,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:01,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:01,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:55:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 284486342, now seen corresponding path program 1 times [2021-11-07 00:55:01,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:01,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28740526] [2021-11-07 00:55:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:01,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:01,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:01,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:55:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:08,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:08,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:08,721 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 00:55:08,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:08,855 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 00:55:08,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:08,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28740526] [2021-11-07 00:55:08,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28740526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:08,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:55:08,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480598707] [2021-11-07 00:55:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:08,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:08,859 INFO L87 Difference]: Start difference. First operand 9289 states and 13494 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 00:55:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:10,104 INFO L93 Difference]: Finished difference Result 24391 states and 35411 transitions. [2021-11-07 00:55:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-07 00:55:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:10,201 INFO L225 Difference]: With dead ends: 24391 [2021-11-07 00:55:10,201 INFO L226 Difference]: Without dead ends: 15105 [2021-11-07 00:55:10,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15105 states. [2021-11-07 00:55:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15105 to 15093. [2021-11-07 00:55:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15093 states, 15084 states have (on average 1.4522673031026252) internal successors, (21906), 15092 states have internal predecessors, (21906), 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 00:55:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15093 states to 15093 states and 21906 transitions. [2021-11-07 00:55:10,850 INFO L78 Accepts]: Start accepts. Automaton has 15093 states and 21906 transitions. Word has length 15 [2021-11-07 00:55:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 15093 states and 21906 transitions. [2021-11-07 00:55:10,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 00:55:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 15093 states and 21906 transitions. [2021-11-07 00:55:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 00:55:10,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:10,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:10,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:11,070 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:55:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1022164411, now seen corresponding path program 1 times [2021-11-07 00:55:11,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:11,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965084763] [2021-11-07 00:55:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:11,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:11,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:11,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:11,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:55:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:18,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:18,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:18,909 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 00:55:18,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:19,141 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 00:55:19,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:19,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965084763] [2021-11-07 00:55:19,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965084763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:19,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:19,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:19,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400852197] [2021-11-07 00:55:19,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:19,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:19,144 INFO L87 Difference]: Start difference. First operand 15093 states and 21906 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 00:55:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:19,644 INFO L93 Difference]: Finished difference Result 15093 states and 21906 transitions. [2021-11-07 00:55:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-11-07 00:55:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:19,707 INFO L225 Difference]: With dead ends: 15093 [2021-11-07 00:55:19,707 INFO L226 Difference]: Without dead ends: 15091 [2021-11-07 00:55:19,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2021-11-07 00:55:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 15091. [2021-11-07 00:55:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15083 states have (on average 1.4522309885301332) internal successors, (21904), 15090 states have internal predecessors, (21904), 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 00:55:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 21904 transitions. [2021-11-07 00:55:20,355 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 21904 transitions. Word has length 19 [2021-11-07 00:55:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:20,355 INFO L470 AbstractCegarLoop]: Abstraction has 15091 states and 21904 transitions. [2021-11-07 00:55:20,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 00:55:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 21904 transitions. [2021-11-07 00:55:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 00:55:20,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:20,359 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] [2021-11-07 00:55:20,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:20,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:20,560 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:55:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1622342718, now seen corresponding path program 1 times [2021-11-07 00:55:20,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:20,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866304092] [2021-11-07 00:55:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:20,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:20,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:20,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:20,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:55:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:28,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:29,010 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 00:55:29,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:29,207 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 00:55:29,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:29,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866304092] [2021-11-07 00:55:29,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866304092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:29,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:29,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:29,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003354793] [2021-11-07 00:55:29,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:29,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:29,211 INFO L87 Difference]: Start difference. First operand 15091 states and 21904 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 00:55:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:29,670 INFO L93 Difference]: Finished difference Result 15091 states and 21904 transitions. [2021-11-07 00:55:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2021-11-07 00:55:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:29,714 INFO L225 Difference]: With dead ends: 15091 [2021-11-07 00:55:29,714 INFO L226 Difference]: Without dead ends: 15089 [2021-11-07 00:55:29,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15089 states. [2021-11-07 00:55:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15089 to 15089. [2021-11-07 00:55:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 15082 states have (on average 1.4521946691420236) internal successors, (21902), 15088 states have internal predecessors, (21902), 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 00:55:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 21902 transitions. [2021-11-07 00:55:30,704 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 21902 transitions. Word has length 20 [2021-11-07 00:55:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 15089 states and 21902 transitions. [2021-11-07 00:55:30,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 00:55:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 21902 transitions. [2021-11-07 00:55:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 00:55:30,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:30,707 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] [2021-11-07 00:55:30,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:30,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:30,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:55:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1246966235, now seen corresponding path program 1 times [2021-11-07 00:55:30,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:30,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008145411] [2021-11-07 00:55:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:30,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:30,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:55:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:38,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:38,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:38,795 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 00:55:38,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:39,036 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 00:55:39,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:39,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008145411] [2021-11-07 00:55:39,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008145411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:39,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:39,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:39,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25662357] [2021-11-07 00:55:39,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:39,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:39,039 INFO L87 Difference]: Start difference. First operand 15089 states and 21902 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 00:55:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:40,067 INFO L93 Difference]: Finished difference Result 39317 states and 57092 transitions. [2021-11-07 00:55:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:40,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-11-07 00:55:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:40,155 INFO L225 Difference]: With dead ends: 39317 [2021-11-07 00:55:40,156 INFO L226 Difference]: Without dead ends: 27163 [2021-11-07 00:55:40,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27163 states. [2021-11-07 00:55:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27163 to 24195. [2021-11-07 00:55:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24195 states, 24188 states have (on average 1.4527451628906896) internal successors, (35139), 24194 states have internal predecessors, (35139), 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 00:55:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24195 states to 24195 states and 35139 transitions. [2021-11-07 00:55:41,422 INFO L78 Accepts]: Start accepts. Automaton has 24195 states and 35139 transitions. Word has length 21 [2021-11-07 00:55:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:41,423 INFO L470 AbstractCegarLoop]: Abstraction has 24195 states and 35139 transitions. [2021-11-07 00:55:41,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 00:55:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 24195 states and 35139 transitions. [2021-11-07 00:55:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 00:55:41,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:41,426 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] [2021-11-07 00:55:41,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:41,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:41,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:55:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1452142114, now seen corresponding path program 1 times [2021-11-07 00:55:41,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:41,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021593775] [2021-11-07 00:55:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:41,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:41,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:41,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:55:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:49,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:49,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:49,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:50,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:50,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021593775] [2021-11-07 00:55:50,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021593775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:50,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:50,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:55:50,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635717519] [2021-11-07 00:55:50,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:55:50,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:55:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:55:50,106 INFO L87 Difference]: Start difference. First operand 24195 states and 35139 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 00:56:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:00,204 INFO L93 Difference]: Finished difference Result 66721 states and 96893 transitions. [2021-11-07 00:56:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:56:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 38 [2021-11-07 00:56:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:00,351 INFO L225 Difference]: With dead ends: 66721 [2021-11-07 00:56:00,351 INFO L226 Difference]: Without dead ends: 45455 [2021-11-07 00:56:00,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:56:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45455 states. [2021-11-07 00:56:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45455 to 24197. [2021-11-07 00:56:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24197 states, 24190 states have (on average 1.4524596940884662) internal successors, (35135), 24196 states have internal predecessors, (35135), 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 00:56:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24197 states to 24197 states and 35135 transitions. [2021-11-07 00:56:01,830 INFO L78 Accepts]: Start accepts. Automaton has 24197 states and 35135 transitions. Word has length 38 [2021-11-07 00:56:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:01,830 INFO L470 AbstractCegarLoop]: Abstraction has 24197 states and 35135 transitions. [2021-11-07 00:56:01,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 00:56:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 24197 states and 35135 transitions. [2021-11-07 00:56:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 00:56:01,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:01,838 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] [2021-11-07 00:56:01,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:02,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:02,054 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:56:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1571909343, now seen corresponding path program 1 times [2021-11-07 00:56:02,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:02,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806148778] [2021-11-07 00:56:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:02,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:02,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:02,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:02,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:56:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:09,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2187 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:10,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:10,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:10,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806148778] [2021-11-07 00:56:10,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806148778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:10,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:10,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:56:10,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147595927] [2021-11-07 00:56:10,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:56:10,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:56:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:10,743 INFO L87 Difference]: Start difference. First operand 24197 states and 35135 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 00:56:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:11,602 INFO L93 Difference]: Finished difference Result 45453 states and 66001 transitions. [2021-11-07 00:56:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:56:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2021-11-07 00:56:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:11,672 INFO L225 Difference]: With dead ends: 45453 [2021-11-07 00:56:11,672 INFO L226 Difference]: Without dead ends: 24197 [2021-11-07 00:56:11,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24197 states. [2021-11-07 00:56:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24197 to 24197. [2021-11-07 00:56:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24197 states, 24190 states have (on average 1.4521289789169078) internal successors, (35127), 24196 states have internal predecessors, (35127), 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 00:56:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24197 states to 24197 states and 35127 transitions. [2021-11-07 00:56:12,908 INFO L78 Accepts]: Start accepts. Automaton has 24197 states and 35127 transitions. Word has length 58 [2021-11-07 00:56:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:12,908 INFO L470 AbstractCegarLoop]: Abstraction has 24197 states and 35127 transitions. [2021-11-07 00:56:12,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 00:56:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 24197 states and 35127 transitions. [2021-11-07 00:56:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 00:56:12,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:12,914 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] [2021-11-07 00:56:12,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:13,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:13,138 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:56:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1363807816, now seen corresponding path program 1 times [2021-11-07 00:56:13,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:13,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957678268] [2021-11-07 00:56:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:13,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:13,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:13,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:56:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:20,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:56:20,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:21,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:22,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:22,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957678268] [2021-11-07 00:56:22,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957678268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:22,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:22,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:56:22,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889224900] [2021-11-07 00:56:22,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:56:22,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:56:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:56:22,054 INFO L87 Difference]: Start difference. First operand 24197 states and 35127 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 00:56:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:44,642 INFO L93 Difference]: Finished difference Result 69335 states and 100743 transitions. [2021-11-07 00:56:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:56:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 60 [2021-11-07 00:56:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:44,733 INFO L225 Difference]: With dead ends: 69335 [2021-11-07 00:56:44,734 INFO L226 Difference]: Without dead ends: 48071 [2021-11-07 00:56:44,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:56:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48071 states. [2021-11-07 00:56:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48071 to 24201. [2021-11-07 00:56:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24201 states, 24194 states have (on average 1.451971563197487) internal successors, (35129), 24200 states have internal predecessors, (35129), 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 00:56:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24201 states to 24201 states and 35129 transitions. [2021-11-07 00:56:46,431 INFO L78 Accepts]: Start accepts. Automaton has 24201 states and 35129 transitions. Word has length 60 [2021-11-07 00:56:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:46,431 INFO L470 AbstractCegarLoop]: Abstraction has 24201 states and 35129 transitions. [2021-11-07 00:56:46,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 00:56:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24201 states and 35129 transitions. [2021-11-07 00:56:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 00:56:46,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:46,438 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:46,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:46,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:46,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:56:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 942625040, now seen corresponding path program 1 times [2021-11-07 00:56:46,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:46,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723600664] [2021-11-07 00:56:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:46,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:46,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:46,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:46,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:56:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:56:54,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:54,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:55,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:55,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723600664] [2021-11-07 00:56:55,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723600664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:55,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:55,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:56:55,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730366883] [2021-11-07 00:56:55,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:56:55,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:56:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:56:55,244 INFO L87 Difference]: Start difference. First operand 24201 states and 35129 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:08,035 INFO L93 Difference]: Finished difference Result 66726 states and 96848 transitions. [2021-11-07 00:57:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:57:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 00:57:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:08,109 INFO L225 Difference]: With dead ends: 66726 [2021-11-07 00:57:08,109 INFO L226 Difference]: Without dead ends: 45444 [2021-11-07 00:57:08,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45444 states. [2021-11-07 00:57:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45444 to 24189. [2021-11-07 00:57:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24189 states, 24182 states have (on average 1.4518650235712514) internal successors, (35109), 24188 states have internal predecessors, (35109), 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 00:57:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24189 states to 24189 states and 35109 transitions. [2021-11-07 00:57:09,563 INFO L78 Accepts]: Start accepts. Automaton has 24189 states and 35109 transitions. Word has length 66 [2021-11-07 00:57:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:09,563 INFO L470 AbstractCegarLoop]: Abstraction has 24189 states and 35109 transitions. [2021-11-07 00:57:09,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 24189 states and 35109 transitions. [2021-11-07 00:57:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 00:57:09,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:09,567 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] [2021-11-07 00:57:09,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:09,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:09,768 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:57:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2078295610, now seen corresponding path program 1 times [2021-11-07 00:57:09,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:09,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138979420] [2021-11-07 00:57:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:09,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:09,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:09,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:57:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:18,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:18,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:18,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:19,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:19,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138979420] [2021-11-07 00:57:19,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138979420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:19,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:19,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:57:19,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969146585] [2021-11-07 00:57:19,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:57:19,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:19,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:57:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:57:19,071 INFO L87 Difference]: Start difference. First operand 24189 states and 35109 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 00:57:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:42,089 INFO L93 Difference]: Finished difference Result 69306 states and 100680 transitions. [2021-11-07 00:57:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:57:42,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 73 [2021-11-07 00:57:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:42,165 INFO L225 Difference]: With dead ends: 69306 [2021-11-07 00:57:42,165 INFO L226 Difference]: Without dead ends: 48050 [2021-11-07 00:57:42,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:57:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48050 states. [2021-11-07 00:57:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48050 to 24192. [2021-11-07 00:57:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24192 states, 24185 states have (on average 1.4517262766177383) internal successors, (35110), 24191 states have internal predecessors, (35110), 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 00:57:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24192 states to 24192 states and 35110 transitions. [2021-11-07 00:57:43,676 INFO L78 Accepts]: Start accepts. Automaton has 24192 states and 35110 transitions. Word has length 73 [2021-11-07 00:57:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:43,676 INFO L470 AbstractCegarLoop]: Abstraction has 24192 states and 35110 transitions. [2021-11-07 00:57:43,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 00:57:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 24192 states and 35110 transitions. [2021-11-07 00:57:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 00:57:43,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:43,683 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] [2021-11-07 00:57:43,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:43,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:57:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2040831026, now seen corresponding path program 1 times [2021-11-07 00:57:43,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:43,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183491363] [2021-11-07 00:57:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:43,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:43,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:43,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:43,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:57:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:52,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:57:52,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:52,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:53,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:53,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183491363] [2021-11-07 00:57:53,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183491363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:53,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:53,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:57:53,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353615351] [2021-11-07 00:57:53,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:53,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:53,195 INFO L87 Difference]: Start difference. First operand 24192 states and 35110 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 00:57:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:58,786 INFO L93 Difference]: Finished difference Result 69537 states and 101049 transitions. [2021-11-07 00:57:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 79 [2021-11-07 00:57:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:58,868 INFO L225 Difference]: With dead ends: 69537 [2021-11-07 00:57:58,868 INFO L226 Difference]: Without dead ends: 48286 [2021-11-07 00:57:58,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 154 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 00:57:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48286 states. [2021-11-07 00:58:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48286 to 48244. [2021-11-07 00:58:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48244 states, 48237 states have (on average 1.4528266683251445) internal successors, (70080), 48243 states have internal predecessors, (70080), 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 00:58:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48244 states to 48244 states and 70080 transitions. [2021-11-07 00:58:01,773 INFO L78 Accepts]: Start accepts. Automaton has 48244 states and 70080 transitions. Word has length 79 [2021-11-07 00:58:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 48244 states and 70080 transitions. [2021-11-07 00:58:01,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 00:58:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 48244 states and 70080 transitions. [2021-11-07 00:58:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 00:58:01,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:01,787 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:01,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:02,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:02,002 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:58:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1650690632, now seen corresponding path program 1 times [2021-11-07 00:58:02,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:02,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537957890] [2021-11-07 00:58:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:02,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:02,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:58:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:58:10,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:58:11,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:58:11,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:11,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537957890] [2021-11-07 00:58:11,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537957890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:11,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:58:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271057522] [2021-11-07 00:58:11,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:11,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:11,636 INFO L87 Difference]: Start difference. First operand 48244 states and 70080 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 00:58:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:19,217 INFO L93 Difference]: Finished difference Result 117641 states and 170981 transitions. [2021-11-07 00:58:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:19,218 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 101 [2021-11-07 00:58:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:19,348 INFO L225 Difference]: With dead ends: 117641 [2021-11-07 00:58:19,348 INFO L226 Difference]: Without dead ends: 72338 [2021-11-07 00:58:19,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 198 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 00:58:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72338 states. [2021-11-07 00:58:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72338 to 72296. [2021-11-07 00:58:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72296 states, 72289 states have (on average 1.453084148348988) internal successors, (105042), 72295 states have internal predecessors, (105042), 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 00:58:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72296 states to 72296 states and 105042 transitions. [2021-11-07 00:58:23,829 INFO L78 Accepts]: Start accepts. Automaton has 72296 states and 105042 transitions. Word has length 101 [2021-11-07 00:58:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:23,829 INFO L470 AbstractCegarLoop]: Abstraction has 72296 states and 105042 transitions. [2021-11-07 00:58:23,829 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 00:58:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 72296 states and 105042 transitions. [2021-11-07 00:58:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 00:58:23,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:23,838 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-11-07 00:58:23,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 00:58:24,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:24,039 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 00:58:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1280217918, now seen corresponding path program 1 times [2021-11-07 00:58:24,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:24,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683989426] [2021-11-07 00:58:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:24,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:24,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:24,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f854eee9-ae44-4876-b912-bf66f33e7d54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:58:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:33,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:58:33,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 00:58:33,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 00:58:33,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:33,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683989426] [2021-11-07 00:58:33,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683989426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:33,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:33,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:58:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887427695] [2021-11-07 00:58:33,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:33,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:33,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:33,897 INFO L87 Difference]: Start difference. First operand 72296 states and 105042 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 00:58:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:42,000 INFO L93 Difference]: Finished difference Result 153719 states and 223376 transitions. [2021-11-07 00:58:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 112 [2021-11-07 00:58:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:42,275 INFO L225 Difference]: With dead ends: 153719 [2021-11-07 00:58:42,275 INFO L226 Difference]: Without dead ends: 84364 [2021-11-07 00:58:42,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 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 00:58:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84364 states.