./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/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_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:50,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:50,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:50,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:50,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:50,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:50,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:50,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:50,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:50,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:50,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:50,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:50,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:50,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:50,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:50,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:50,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:50,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:50,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:50,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:50,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:50,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:50,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:50,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:50,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:50,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:50,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:50,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:50,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:50,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:50,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:50,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:50,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:50,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:50,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:50,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:50,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:50,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:50,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:50,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:50,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:50,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 02:15:50,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:50,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:50,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:50,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:50,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:50,942 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:50,942 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:15:50,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:50,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:50,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:15:50,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:15:50,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:50,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:15:50,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:15:50,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:15:50,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:15:50,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:15:50,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:50,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:15:50,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:15:50,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:50,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:15:50,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:50,947 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:15:50,947 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:15:50,947 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:15:50,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:50,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:50,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:15:50,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:50,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:50,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:50,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:50,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:50,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:50,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:15:50,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:15:50,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:50,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:50,951 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_d627a113-68d3-4e53-96ed-d410f030b972/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2021-11-07 02:15:51,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:51,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:51,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:51,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:51,366 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:51,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-11-07 02:15:51,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/e865274c0/447e5f19593f4d1c83a48c3b94981de9/FLAG207c0ae88 [2021-11-07 02:15:52,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:52,541 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-11-07 02:15:52,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/e865274c0/447e5f19593f4d1c83a48c3b94981de9/FLAG207c0ae88 [2021-11-07 02:15:52,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/e865274c0/447e5f19593f4d1c83a48c3b94981de9 [2021-11-07 02:15:52,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:52,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:52,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:52,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:52,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:52,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:52" (1/1) ... [2021-11-07 02:15:52,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db2f02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:52, skipping insertion in model container [2021-11-07 02:15:52,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:52" (1/1) ... [2021-11-07 02:15:52,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:15:53,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:15:54,136 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_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-11-07 02:15:54,233 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 02:15:54,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:54,918 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 02:15:54,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51031665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:54, skipping insertion in model container [2021-11-07 02:15:54,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:54,919 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:15:54,922 INFO L168 Benchmark]: Toolchain (without parser) took 1986.70 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 77.5 MB in the beginning and 109.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:54,923 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 115.3 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:15:54,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1983.35 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 77.3 MB in the beginning and 109.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:15:54,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 115.3 MB. Free memory is still 70.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1983.35 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 77.3 MB in the beginning and 109.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2246]: 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_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/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_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:57,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:57,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:57,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:57,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:57,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:57,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:57,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:57,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:57,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:57,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:57,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:57,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:57,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:57,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:57,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:57,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:57,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:57,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:57,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:57,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:57,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:57,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:57,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:57,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:57,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:57,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:57,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:57,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:57,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:57,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:57,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:57,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:57,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:57,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:57,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:57,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:57,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:57,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:57,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:57,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:57,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 02:15:57,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:57,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:57,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:57,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:57,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:57,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:57,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:57,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:57,656 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:57,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:15:57,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:15:57,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:57,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:15:57,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:15:57,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:57,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:15:57,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:57,662 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:15:57,662 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:15:57,662 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:15:57,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:57,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:57,663 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:15:57,663 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:15:57,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:15:57,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:57,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:57,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:15:57,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:57,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:57,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:57,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:57,666 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:15:57,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:57,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:57,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:57,667 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_d627a113-68d3-4e53-96ed-d410f030b972/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2021-11-07 02:15:58,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:58,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:58,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:58,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:58,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:58,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-11-07 02:15:58,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/ea57c7dc2/8468d46addff4579893390b038180d36/FLAG15c7fcd53 [2021-11-07 02:15:59,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:59,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-11-07 02:15:59,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/ea57c7dc2/8468d46addff4579893390b038180d36/FLAG15c7fcd53 [2021-11-07 02:15:59,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/data/ea57c7dc2/8468d46addff4579893390b038180d36 [2021-11-07 02:15:59,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:59,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:59,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:59,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:59,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:59,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:59" (1/1) ... [2021-11-07 02:15:59,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5044b47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:59, skipping insertion in model container [2021-11-07 02:15:59,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:59" (1/1) ... [2021-11-07 02:15:59,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:00,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:00,896 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_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-11-07 02:16:01,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:01,577 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:16:01,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:01,698 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_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-11-07 02:16:02,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:02,054 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:02,146 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_d627a113-68d3-4e53-96ed-d410f030b972/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-11-07 02:16:02,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:02,561 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:02,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02 WrapperNode [2021-11-07 02:16:02,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:02,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:02,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:02,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:02,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:02,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:03,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:03,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:03,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:03,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:03,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:03,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:03,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:03,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (1/1) ... [2021-11-07 02:16:03,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:03,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:03,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:16:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:16:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:16:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:16:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:16:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:16:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:16:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:16:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:16:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:16:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:16:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:16:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:16:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:16:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:16:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:16:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:16:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:16:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:16:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:04,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:04,810 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,832 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,838 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,862 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,863 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,864 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,869 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,871 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,874 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,875 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,875 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,878 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,881 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,884 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,885 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,887 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,888 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,889 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,891 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,896 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,897 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,898 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,899 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,904 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,905 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,906 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,913 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,915 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,923 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,924 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,924 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,930 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,932 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,937 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,938 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,938 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,940 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,944 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,946 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,946 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,947 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,948 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:04,950 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,001 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,004 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,005 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,008 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,012 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,013 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,013 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,025 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,027 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,043 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,044 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,044 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,048 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,072 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,077 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,078 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,079 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,081 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,085 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,091 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,099 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,100 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,101 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,127 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,133 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,157 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,157 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,158 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,167 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,169 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,179 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,180 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,186 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,188 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,195 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,197 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,198 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,199 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,201 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,204 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:16:05,208 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:17:09,385 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1273: assume false; [2021-11-07 02:17:09,385 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1274: assume !false; [2021-11-07 02:17:09,386 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1243: assume false; [2021-11-07 02:17:09,386 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1244: assume !false; [2021-11-07 02:17:09,387 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1201: assume false; [2021-11-07 02:17:09,387 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1202: assume !false; [2021-11-07 02:17:09,387 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1162: assume false; [2021-11-07 02:17:09,387 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1163: assume !false; [2021-11-07 02:17:09,388 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1141: assume false; [2021-11-07 02:17:09,388 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1142: assume !false; [2021-11-07 02:17:09,388 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1113: assume false; [2021-11-07 02:17:09,388 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1114: assume !false; [2021-11-07 02:17:09,389 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1117: assume false; [2021-11-07 02:17:09,389 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1118: assume !false; [2021-11-07 02:17:09,389 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1104: assume false; [2021-11-07 02:17:09,389 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1105: assume !false; [2021-11-07 02:17:09,389 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1081: assume false; [2021-11-07 02:17:09,390 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1082: assume !false; [2021-11-07 02:17:09,390 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2390: assume !false; [2021-11-07 02:17:09,390 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2389: assume false; [2021-11-07 02:17:09,390 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2368: assume false; [2021-11-07 02:17:09,391 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2369: assume !false; [2021-11-07 02:17:09,391 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2333: assume false; [2021-11-07 02:17:09,391 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2334: assume !false; [2021-11-07 02:17:09,391 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2311: assume false; [2021-11-07 02:17:09,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2312: assume !false; [2021-11-07 02:17:09,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2292: assume false; [2021-11-07 02:17:09,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2293: assume !false; [2021-11-07 02:17:09,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2285: assume false; [2021-11-07 02:17:09,392 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2286: assume !false; [2021-11-07 02:17:09,393 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2267: assume false; [2021-11-07 02:17:09,393 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2268: assume !false; [2021-11-07 02:17:09,393 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume false; [2021-11-07 02:17:09,393 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume !false; [2021-11-07 02:17:09,394 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-07 02:17:09,394 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-07 02:17:09,394 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1661: assume false; [2021-11-07 02:17:09,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1662: assume !false; [2021-11-07 02:17:09,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1665: assume false; [2021-11-07 02:17:09,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1666: assume !false; [2021-11-07 02:17:09,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1652: assume false; [2021-11-07 02:17:09,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1653: assume !false; [2021-11-07 02:17:09,396 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1629: assume false; [2021-11-07 02:17:09,396 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1630: assume !false; [2021-11-07 02:17:09,396 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1613: assume false; [2021-11-07 02:17:09,396 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1614: assume !false; [2021-11-07 02:17:09,397 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1690: assume !false; [2021-11-07 02:17:09,397 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1689: assume false; [2021-11-07 02:17:09,397 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1564: assume false; [2021-11-07 02:17:09,397 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1565: assume !false; [2021-11-07 02:17:09,398 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1568: assume false; [2021-11-07 02:17:09,398 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1569: assume !false; [2021-11-07 02:17:09,398 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1555: assume false; [2021-11-07 02:17:09,398 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1556: assume !false; [2021-11-07 02:17:09,399 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1429: assume false; [2021-11-07 02:17:09,399 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1467: assume false; [2021-11-07 02:17:09,399 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1468: assume !false; [2021-11-07 02:17:09,400 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1430: assume !false; [2021-11-07 02:17:09,400 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1301: assume false; [2021-11-07 02:17:09,400 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1302: assume !false; [2021-11-07 02:17:09,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1361: assume false; [2021-11-07 02:17:09,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1362: assume !false; [2021-11-07 02:17:09,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1365: assume false; [2021-11-07 02:17:09,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1366: assume !false; [2021-11-07 02:17:09,401 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1352: assume false; [2021-11-07 02:17:09,402 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1353: assume !false; [2021-11-07 02:17:09,402 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume !false; [2021-11-07 02:17:09,402 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##121: assume false; [2021-11-07 02:17:09,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##268: assume !false; [2021-11-07 02:17:09,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##267: assume false; [2021-11-07 02:17:09,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##283: assume false; [2021-11-07 02:17:09,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume !false; [2021-11-07 02:17:09,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##209: assume false; [2021-11-07 02:17:09,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume !false; [2021-11-07 02:17:09,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##218: assume false; [2021-11-07 02:17:09,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##219: assume !false; [2021-11-07 02:17:09,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##223: assume !false; [2021-11-07 02:17:09,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##222: assume false; [2021-11-07 02:17:09,405 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##306: assume false; [2021-11-07 02:17:09,405 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##307: assume !false; [2021-11-07 02:17:09,405 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##316: assume !false; [2021-11-07 02:17:09,405 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##315: assume false; [2021-11-07 02:17:09,406 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##319: assume false; [2021-11-07 02:17:09,406 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##320: assume !false; [2021-11-07 02:17:09,406 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1971: assume false; [2021-11-07 02:17:09,406 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1972: assume !false; [2021-11-07 02:17:09,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##344: assume !false; [2021-11-07 02:17:09,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##343: assume false; [2021-11-07 02:17:09,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2021-11-07 02:17:09,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2021-11-07 02:17:09,407 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##441: assume false; [2021-11-07 02:17:09,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##442: assume !false; [2021-11-07 02:17:09,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1933: assume false; [2021-11-07 02:17:09,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1934: assume !false; [2021-11-07 02:17:09,408 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1870: assume !false; [2021-11-07 02:17:09,409 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1865: assume false; [2021-11-07 02:17:09,409 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1866: assume !false; [2021-11-07 02:17:09,409 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1869: assume false; [2021-11-07 02:17:09,409 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1856: assume false; [2021-11-07 02:17:09,410 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1857: assume !false; [2021-11-07 02:17:09,410 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##494: assume !false; [2021-11-07 02:17:09,410 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##493: assume false; [2021-11-07 02:17:09,410 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##472: assume !false; [2021-11-07 02:17:09,410 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##471: assume false; [2021-11-07 02:17:09,411 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##477: assume !false; [2021-11-07 02:17:09,411 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume false; [2021-11-07 02:17:09,411 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##524: assume !false; [2021-11-07 02:17:09,411 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##523: assume false; [2021-11-07 02:17:09,411 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##544: assume false; [2021-11-07 02:17:09,412 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##545: assume !false; [2021-11-07 02:17:09,412 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##565: assume !false; [2021-11-07 02:17:09,412 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##564: assume false; [2021-11-07 02:17:09,412 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1805: assume false; [2021-11-07 02:17:09,412 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1806: assume !false; [2021-11-07 02:17:09,413 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1766: assume false; [2021-11-07 02:17:09,413 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1767: assume !false; [2021-11-07 02:17:09,413 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##576: assume !false; [2021-11-07 02:17:09,413 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##575: assume false; [2021-11-07 02:17:09,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##582: assume !false; [2021-11-07 02:17:09,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##581: assume false; [2021-11-07 02:17:09,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2193: assume false; [2021-11-07 02:17:09,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2194: assume !false; [2021-11-07 02:17:09,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##661: assume !false; [2021-11-07 02:17:09,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##660: assume false; [2021-11-07 02:17:09,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##669: assume false; [2021-11-07 02:17:09,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2170: assume !false; [2021-11-07 02:17:09,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##670: assume !false; [2021-11-07 02:17:09,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##674: assume !false; [2021-11-07 02:17:09,416 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##673: assume false; [2021-11-07 02:17:09,416 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2166: assume !false; [2021-11-07 02:17:09,416 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2165: assume false; [2021-11-07 02:17:09,416 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2169: assume false; [2021-11-07 02:17:09,416 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##609: assume false; [2021-11-07 02:17:09,417 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2157: assume !false; [2021-11-07 02:17:09,417 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2156: assume false; [2021-11-07 02:17:09,417 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##610: assume !false; [2021-11-07 02:17:09,417 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2133: assume false; [2021-11-07 02:17:09,417 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2134: assume !false; [2021-11-07 02:17:09,418 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2117: assume false; [2021-11-07 02:17:09,418 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2118: assume !false; [2021-11-07 02:17:09,418 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2072: assume false; [2021-11-07 02:17:09,418 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2073: assume !false; [2021-11-07 02:17:09,419 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##775: assume false; [2021-11-07 02:17:09,419 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##776: assume !false; [2021-11-07 02:17:09,419 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2060: assume !false; [2021-11-07 02:17:09,419 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2069: assume !false; [2021-11-07 02:17:09,419 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2068: assume false; [2021-11-07 02:17:09,420 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2059: assume false; [2021-11-07 02:17:09,420 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##738: assume !false; [2021-11-07 02:17:09,420 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##737: assume false; [2021-11-07 02:17:09,420 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##863: assume false; [2021-11-07 02:17:09,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##864: assume !false; [2021-11-07 02:17:09,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##873: assume !false; [2021-11-07 02:17:09,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##872: assume false; [2021-11-07 02:17:09,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##877: assume !false; [2021-11-07 02:17:09,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##876: assume false; [2021-11-07 02:17:09,422 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##969: assume false; [2021-11-07 02:17:09,422 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##973: assume false; [2021-11-07 02:17:09,422 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##970: assume !false; [2021-11-07 02:17:09,422 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##974: assume !false; [2021-11-07 02:17:09,423 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##998: assume !false; [2021-11-07 02:17:09,423 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##997: assume false; [2021-11-07 02:17:09,423 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##922: assume !false; [2021-11-07 02:17:09,423 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##921: assume false; [2021-11-07 02:17:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##937: assume false; [2021-11-07 02:17:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##938: assume !false; [2021-11-07 02:17:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##961: assume !false; [2021-11-07 02:17:09,424 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##960: assume false; [2021-11-07 02:17:09,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:17:09,470 INFO L299 CfgBuilder]: Removed 870 assume(true) statements. [2021-11-07 02:17:09,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:09 BoogieIcfgContainer [2021-11-07 02:17:09,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:17:09,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:17:09,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:17:09,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:17:09,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:59" (1/3) ... [2021-11-07 02:17:09,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70aa7832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:09, skipping insertion in model container [2021-11-07 02:17:09,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:02" (2/3) ... [2021-11-07 02:17:09,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70aa7832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:09, skipping insertion in model container [2021-11-07 02:17:09,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:09" (3/3) ... [2021-11-07 02:17:09,491 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2021-11-07 02:17:09,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:17:09,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2758 error locations. [2021-11-07 02:17:09,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:17:09,564 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 02:17:09,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2758 error locations. [2021-11-07 02:17:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 6156 states, 3397 states have (on average 2.075066234913159) internal successors, (7049), 6155 states have internal predecessors, (7049), 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 02:17:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:17:09,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:09,687 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:17:09,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:17:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 02:17:09,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:09,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113889857] [2021-11-07 02:17:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:09,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:09,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:09,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:17:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:17:11,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:12,331 INFO L354 Elim1Store]: treesize reduction 153, result has 17.3 percent of original size [2021-11-07 02:17:12,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 37 [2021-11-07 02:17:12,467 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 02:17:12,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:12,498 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 02:17:12,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:12,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113889857] [2021-11-07 02:17:12,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113889857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:12,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:12,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:17:12,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486647352] [2021-11-07 02:17:12,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:17:12,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:17:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:17:12,544 INFO L87 Difference]: Start difference. First operand has 6156 states, 3397 states have (on average 2.075066234913159) internal successors, (7049), 6155 states have internal predecessors, (7049), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 02:17:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:31,857 INFO L93 Difference]: Finished difference Result 8777 states and 9835 transitions. [2021-11-07 02:17:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:17:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-07 02:17:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:31,930 INFO L225 Difference]: With dead ends: 8777 [2021-11-07 02:17:31,931 INFO L226 Difference]: Without dead ends: 8775 [2021-11-07 02:17:31,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:17:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2021-11-07 02:17:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 6152. [2021-11-07 02:17:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 3396 states have (on average 2.027090694935218) internal successors, (6884), 6151 states have internal predecessors, (6884), 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 02:17:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 6884 transitions. [2021-11-07 02:17:32,192 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 6884 transitions. Word has length 3 [2021-11-07 02:17:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:32,193 INFO L470 AbstractCegarLoop]: Abstraction has 6152 states and 6884 transitions. [2021-11-07 02:17:32,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 02:17:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 6884 transitions. [2021-11-07 02:17:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:17:32,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:32,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:17:32,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:32,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:32,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:17:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 02:17:32,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:32,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392167474] [2021-11-07 02:17:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:32,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:32,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:32,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:32,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:17:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:34,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:17:34,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:35,044 INFO L354 Elim1Store]: treesize reduction 143, result has 22.7 percent of original size [2021-11-07 02:17:35,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 68 [2021-11-07 02:17:35,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 70 [2021-11-07 02:17:35,854 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 02:17:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:35,968 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 02:17:35,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:35,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392167474] [2021-11-07 02:17:35,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392167474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:35,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:35,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:17:35,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344816645] [2021-11-07 02:17:35,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:17:35,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:17:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:17:35,973 INFO L87 Difference]: Start difference. First operand 6152 states and 6884 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 02:18:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:36,677 INFO L93 Difference]: Finished difference Result 6150 states and 6882 transitions. [2021-11-07 02:18:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:18:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-07 02:18:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:36,716 INFO L225 Difference]: With dead ends: 6150 [2021-11-07 02:18:36,716 INFO L226 Difference]: Without dead ends: 6150 [2021-11-07 02:18:36,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-11-07 02:18:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 6150. [2021-11-07 02:18:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6150 states, 3396 states have (on average 2.0265017667844525) internal successors, (6882), 6149 states have internal predecessors, (6882), 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 02:18:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 6882 transitions. [2021-11-07 02:18:36,875 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 6882 transitions. Word has length 3 [2021-11-07 02:18:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 6150 states and 6882 transitions. [2021-11-07 02:18:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 02:18:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 6882 transitions. [2021-11-07 02:18:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:18:36,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:36,877 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:36,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:37,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:37,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:18:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024994, now seen corresponding path program 1 times [2021-11-07 02:18:37,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:37,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359326041] [2021-11-07 02:18:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:37,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:37,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:37,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:18:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:38,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:18:38,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:38,474 INFO L354 Elim1Store]: treesize reduction 153, result has 17.3 percent of original size [2021-11-07 02:18:38,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 37 [2021-11-07 02:18:38,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-07 02:18:38,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-07 02:18:38,795 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 02:18:38,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:38,917 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 02:18:38,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:38,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359326041] [2021-11-07 02:18:38,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359326041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:38,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:38,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 02:18:38,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440391283] [2021-11-07 02:18:38,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:18:38,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:18:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:18:38,921 INFO L87 Difference]: Start difference. First operand 6150 states and 6882 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 02:20:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:13,201 INFO L93 Difference]: Finished difference Result 8510 states and 9551 transitions. [2021-11-07 02:20:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:20:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 7 [2021-11-07 02:20:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:13,246 INFO L225 Difference]: With dead ends: 8510 [2021-11-07 02:20:13,246 INFO L226 Difference]: Without dead ends: 8510 [2021-11-07 02:20:13,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:20:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2021-11-07 02:20:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 6149. [2021-11-07 02:20:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 3396 states have (on average 2.0262073027090697) internal successors, (6881), 6148 states have internal predecessors, (6881), 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 02:20:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 6881 transitions. [2021-11-07 02:20:13,411 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 6881 transitions. Word has length 7 [2021-11-07 02:20:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:13,411 INFO L470 AbstractCegarLoop]: Abstraction has 6149 states and 6881 transitions. [2021-11-07 02:20:13,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 02:20:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 6881 transitions. [2021-11-07 02:20:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:20:13,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:13,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:13,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:13,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:13,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:20:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash 59200010, now seen corresponding path program 1 times [2021-11-07 02:20:13,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:13,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566561162] [2021-11-07 02:20:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:13,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:13,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:13,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:20:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:14,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:20:14,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:15,133 INFO L354 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2021-11-07 02:20:15,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2021-11-07 02:20:15,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-07 02:20:15,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:20:15,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2021-11-07 02:20:15,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-07 02:20:15,579 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 02:20:15,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:16,128 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 02:20:16,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:16,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566561162] [2021-11-07 02:20:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566561162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:16,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 02:20:16,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577572098] [2021-11-07 02:20:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:20:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:20:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:16,132 INFO L87 Difference]: Start difference. First operand 6149 states and 6881 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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 02:22:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:23,768 INFO L93 Difference]: Finished difference Result 6985 states and 7847 transitions. [2021-11-07 02:22:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:22:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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 8 [2021-11-07 02:22:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:23,806 INFO L225 Difference]: With dead ends: 6985 [2021-11-07 02:22:23,806 INFO L226 Difference]: Without dead ends: 6985 [2021-11-07 02:22:23,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:22:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2021-11-07 02:22:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 6148. [2021-11-07 02:22:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 3396 states have (on average 2.025912838633687) internal successors, (6880), 6147 states have internal predecessors, (6880), 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 02:22:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 6880 transitions. [2021-11-07 02:22:24,039 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 6880 transitions. Word has length 8 [2021-11-07 02:22:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:24,040 INFO L470 AbstractCegarLoop]: Abstraction has 6148 states and 6880 transitions. [2021-11-07 02:22:24,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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 02:22:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 6880 transitions. [2021-11-07 02:22:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 02:22:24,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:24,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:24,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:24,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:24,255 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:22:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1604011029, now seen corresponding path program 1 times [2021-11-07 02:22:24,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:24,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134641135] [2021-11-07 02:22:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:24,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:24,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:24,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:24,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:22:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:25,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:25,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:25,651 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 02:22:25,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:25,720 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 02:22:25,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:25,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134641135] [2021-11-07 02:22:25,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134641135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:25,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:25,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:22:25,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791444737] [2021-11-07 02:22:25,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:22:25,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:22:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:25,723 INFO L87 Difference]: Start difference. First operand 6148 states and 6880 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 02:22:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:26,399 INFO L93 Difference]: Finished difference Result 9626 states and 10787 transitions. [2021-11-07 02:22:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:22:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 11 [2021-11-07 02:22:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:26,430 INFO L225 Difference]: With dead ends: 9626 [2021-11-07 02:22:26,430 INFO L226 Difference]: Without dead ends: 9626 [2021-11-07 02:22:26,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9626 states. [2021-11-07 02:22:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9626 to 6158. [2021-11-07 02:22:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 3406 states have (on average 2.0229007633587788) internal successors, (6890), 6157 states have internal predecessors, (6890), 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 02:22:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 6890 transitions. [2021-11-07 02:22:26,584 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 6890 transitions. Word has length 11 [2021-11-07 02:22:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:26,584 INFO L470 AbstractCegarLoop]: Abstraction has 6158 states and 6890 transitions. [2021-11-07 02:22:26,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 02:22:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 6890 transitions. [2021-11-07 02:22:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:22:26,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:26,587 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:26,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:26,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:26,803 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:22:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 436691051, now seen corresponding path program 1 times [2021-11-07 02:22:26,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:26,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787672422] [2021-11-07 02:22:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:26,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:26,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:26,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:22:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:28,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:28,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:28,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:28,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787672422] [2021-11-07 02:22:28,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787672422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:28,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [662821092] [2021-11-07 02:22:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:28,479 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:28,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:22:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:30,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:30,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:30,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:30,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [662821092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:30,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575725610] [2021-11-07 02:22:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:30,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:30,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:22:30,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 02:22:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:32,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:22:32,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:32,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:32,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575725610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:32,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:22:32,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 02:22:32,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403442816] [2021-11-07 02:22:32,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:22:32,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:22:32,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:22:32,476 INFO L87 Difference]: Start difference. First operand 6158 states and 6890 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 02:22:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:34,603 INFO L93 Difference]: Finished difference Result 9646 states and 10807 transitions. [2021-11-07 02:22:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 02:22:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 13 [2021-11-07 02:22:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:34,625 INFO L225 Difference]: With dead ends: 9646 [2021-11-07 02:22:34,625 INFO L226 Difference]: Without dead ends: 9646 [2021-11-07 02:22:34,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2021-11-07 02:22:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9646 states. [2021-11-07 02:22:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9646 to 6178. [2021-11-07 02:22:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 3426 states have (on average 2.016929363689434) internal successors, (6910), 6177 states have internal predecessors, (6910), 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 02:22:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 6910 transitions. [2021-11-07 02:22:34,748 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 6910 transitions. Word has length 13 [2021-11-07 02:22:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:34,749 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 6910 transitions. [2021-11-07 02:22:34,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 02:22:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 6910 transitions. [2021-11-07 02:22:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:22:34,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:34,752 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:34,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 02:22:34,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:35,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 02:22:35,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:35,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:22:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1672525461, now seen corresponding path program 2 times [2021-11-07 02:22:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800210326] [2021-11-07 02:22:35,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:22:35,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:35,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:35,384 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:35,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:22:38,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:22:38,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:38,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:22:38,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:39,146 INFO L354 Elim1Store]: treesize reduction 177, result has 15.3 percent of original size [2021-11-07 02:22:39,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 79 [2021-11-07 02:22:43,674 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-11-07 02:22:43,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 113 [2021-11-07 02:22:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:22:45,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:22:45,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:45,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800210326] [2021-11-07 02:22:45,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800210326] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:45,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:45,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:22:45,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704462891] [2021-11-07 02:22:45,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:45,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:45,331 INFO L87 Difference]: Start difference. First operand 6178 states and 6910 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 02:23:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:57,490 INFO L93 Difference]: Finished difference Result 8812 states and 9870 transitions. [2021-11-07 02:23:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:23:57,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 17 [2021-11-07 02:23:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:57,507 INFO L225 Difference]: With dead ends: 8812 [2021-11-07 02:23:57,507 INFO L226 Difference]: Without dead ends: 8812 [2021-11-07 02:23:57,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:23:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8812 states. [2021-11-07 02:23:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8812 to 6177. [2021-11-07 02:23:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6177 states, 3426 states have (on average 2.0166374781085814) internal successors, (6909), 6176 states have internal predecessors, (6909), 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 02:23:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 6909 transitions. [2021-11-07 02:23:57,611 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 6909 transitions. Word has length 17 [2021-11-07 02:23:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 6177 states and 6909 transitions. [2021-11-07 02:23:57,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 02:23:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 6909 transitions. [2021-11-07 02:23:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:23:57,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:57,613 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:57,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:57,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:57,827 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:23:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1672525460, now seen corresponding path program 1 times [2021-11-07 02:23:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:57,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432966898] [2021-11-07 02:23:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:57,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:57,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:57,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:23:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:59,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:23:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:59,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:59,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:59,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432966898] [2021-11-07 02:23:59,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432966898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:23:59,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [390389314] [2021-11-07 02:23:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:59,911 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:23:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:23:59,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:23:59,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:24:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:01,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:24:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:01,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:02,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [390389314] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:24:02,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341375835] [2021-11-07 02:24:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:24:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:24:02,016 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:24:02,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 02:24:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:03,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:24:03,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:03,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:04,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341375835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:24:04,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:24:04,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 25 [2021-11-07 02:24:04,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770634433] [2021-11-07 02:24:04,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 02:24:04,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 02:24:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-07 02:24:04,499 INFO L87 Difference]: Start difference. First operand 6177 states and 6909 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 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 02:24:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:19,733 INFO L93 Difference]: Finished difference Result 9685 states and 10846 transitions. [2021-11-07 02:24:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 02:24:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 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 17 [2021-11-07 02:24:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:19,751 INFO L225 Difference]: With dead ends: 9685 [2021-11-07 02:24:19,751 INFO L226 Difference]: Without dead ends: 9685 [2021-11-07 02:24:19,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=536, Invalid=1104, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 02:24:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9685 states. [2021-11-07 02:24:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9685 to 6217. [2021-11-07 02:24:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6217 states, 3466 states have (on average 2.0049047893825738) internal successors, (6949), 6216 states have internal predecessors, (6949), 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 02:24:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 6949 transitions. [2021-11-07 02:24:19,861 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 6949 transitions. Word has length 17 [2021-11-07 02:24:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:19,861 INFO L470 AbstractCegarLoop]: Abstraction has 6217 states and 6949 transitions. [2021-11-07 02:24:19,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 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 02:24:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 6949 transitions. [2021-11-07 02:24:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:24:19,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:19,863 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:19,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:20,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:20,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:20,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:20,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:24:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 180984684, now seen corresponding path program 2 times [2021-11-07 02:24:20,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:20,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359476543] [2021-11-07 02:24:20,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:24:20,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:20,478 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:20,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:24:24,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:24:24,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:24:25,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:24:25,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:25,339 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-11-07 02:24:25,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 79 [2021-11-07 02:24:25,363 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 02:24:25,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 79 [2021-11-07 02:25:00,384 INFO L354 Elim1Store]: treesize reduction 110, result has 37.5 percent of original size [2021-11-07 02:25:00,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 119 [2021-11-07 02:25:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:25:14,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:25:16,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:16,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359476543] [2021-11-07 02:25:16,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359476543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:16,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:16,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:25:16,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197600357] [2021-11-07 02:25:16,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:25:16,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:25:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:25:16,038 INFO L87 Difference]: Start difference. First operand 6217 states and 6949 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 02:26:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:53,833 INFO L93 Difference]: Finished difference Result 6238 states and 6982 transitions. [2021-11-07 02:26:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:26:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 02:26:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:53,841 INFO L225 Difference]: With dead ends: 6238 [2021-11-07 02:26:53,842 INFO L226 Difference]: Without dead ends: 6238 [2021-11-07 02:26:53,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2021-11-07 02:26:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6216. [2021-11-07 02:26:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 3466 states have (on average 2.004616272360069) internal successors, (6948), 6215 states have internal predecessors, (6948), 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 02:26:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 6948 transitions. [2021-11-07 02:26:53,921 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 6948 transitions. Word has length 25 [2021-11-07 02:26:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:53,922 INFO L470 AbstractCegarLoop]: Abstraction has 6216 states and 6948 transitions. [2021-11-07 02:26:53,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 02:26:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 6948 transitions. [2021-11-07 02:26:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:26:53,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:53,923 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:53,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:54,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:54,142 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:26:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2127588396, now seen corresponding path program 1 times [2021-11-07 02:26:54,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:54,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731245320] [2021-11-07 02:26:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:54,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:54,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:54,148 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:54,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:26:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:55,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:26:55,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:26:56,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:26:57,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:57,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731245320] [2021-11-07 02:26:57,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731245320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:26:57,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1624820809] [2021-11-07 02:26:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:57,551 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:26:57,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:26:57,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:26:57,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 02:26:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:59,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:26:59,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:26:59,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:26:59,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1624820809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:26:59,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18798949] [2021-11-07 02:26:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:59,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:26:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:26:59,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:26:59,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 02:27:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:01,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 02:27:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:27:01,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:27:05,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18798949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:27:05,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:27:05,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 49 [2021-11-07 02:27:05,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182699157] [2021-11-07 02:27:05,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 02:27:05,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 02:27:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 02:27:05,682 INFO L87 Difference]: Start difference. First operand 6216 states and 6948 transitions. Second operand has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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 02:29:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:29:01,617 INFO L93 Difference]: Finished difference Result 9764 states and 10925 transitions. [2021-11-07 02:29:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 02:29:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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 27 [2021-11-07 02:29:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:29:01,631 INFO L225 Difference]: With dead ends: 9764 [2021-11-07 02:29:01,632 INFO L226 Difference]: Without dead ends: 9764 [2021-11-07 02:29:01,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=2028, Invalid=4452, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 02:29:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9764 states. [2021-11-07 02:29:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9764 to 6296. [2021-11-07 02:29:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 3546 states have (on average 1.98195149464185) internal successors, (7028), 6295 states have internal predecessors, (7028), 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 02:29:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 7028 transitions. [2021-11-07 02:29:01,744 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 7028 transitions. Word has length 27 [2021-11-07 02:29:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:29:01,745 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 7028 transitions. [2021-11-07 02:29:01,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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 02:29:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 7028 transitions. [2021-11-07 02:29:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:29:01,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:29:01,748 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:29:01,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:02,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:02,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:29:02,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:29:02,364 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 2754 more)] === [2021-11-07 02:29:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:29:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -178909140, now seen corresponding path program 2 times [2021-11-07 02:29:02,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:29:02,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99591509] [2021-11-07 02:29:02,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:29:02,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:29:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:29:02,367 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:29:02,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627a113-68d3-4e53-96ed-d410f030b972/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:29:06,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:29:06,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:29:06,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:29:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:29:06,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:29:10,867 INFO L354 Elim1Store]: treesize reduction 4991, result has 3.7 percent of original size [2021-11-07 02:29:10,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 20 case distinctions, treesize of input 30507 treesize of output 29617 [2021-11-07 02:29:11,308 INFO L354 Elim1Store]: treesize reduction 30, result has 69.1 percent of original size [2021-11-07 02:29:11,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 29678 treesize of output 29720