./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:33:06,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:33:06,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:33:06,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:33:06,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:33:06,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:33:06,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:33:06,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:33:06,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:33:06,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:33:06,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:33:06,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:33:06,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:33:06,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:33:06,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:33:06,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:33:06,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:33:06,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:33:06,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:33:06,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:33:06,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:33:06,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:33:06,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:33:06,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:33:06,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:33:06,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:33:06,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:33:06,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:33:06,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:33:06,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:33:06,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:33:06,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:33:06,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:33:06,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:33:06,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:33:06,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:33:06,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:33:06,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:33:06,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:33:06,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:33:06,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:33:06,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:33:06,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:33:06,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:33:06,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:33:06,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:33:06,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:33:06,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:33:06,961 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:33:06,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:33:06,961 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:33:06,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:33:06,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:33:06,962 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:33:06,962 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:33:06,962 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:33:06,963 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:33:06,963 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:33:06,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:33:06,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:33:06,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:33:06,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:33:06,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:33:06,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:33:06,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:33:06,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:33:06,965 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:33:06,966 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:33:06,966 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:33:06,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:33:06,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:33:06,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:33:06,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:33:06,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:33:06,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:33:06,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:06,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:33:06,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:33:06,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:33:06,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:33:06,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:33:06,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:33:06,969 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2021-11-19 13:33:07,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:33:07,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:33:07,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:33:07,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:33:07,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:33:07,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-19 13:33:07,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/4deef3d1f/7b12a64ee5d84a68bdb829c919032962/FLAG3435886dd [2021-11-19 13:33:08,071 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:33:08,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-19 13:33:08,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/4deef3d1f/7b12a64ee5d84a68bdb829c919032962/FLAG3435886dd [2021-11-19 13:33:08,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/4deef3d1f/7b12a64ee5d84a68bdb829c919032962 [2021-11-19 13:33:08,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:33:08,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:33:08,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:08,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:33:08,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:33:08,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:08" (1/1) ... [2021-11-19 13:33:08,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d964ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:08, skipping insertion in model container [2021-11-19 13:33:08,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:08" (1/1) ... [2021-11-19 13:33:08,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:33:08,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:33:08,762 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-19 13:33:08,913 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-19 13:33:08,921 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:08,932 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) [2021-11-19 13:33:08,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7cb2719e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:08, skipping insertion in model container [2021-11-19 13:33:08,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:08,933 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:33:08,935 INFO L158 Benchmark]: Toolchain (without parser) took 655.17ms. Allocated memory is still 111.1MB. Free memory was 70.6MB in the beginning and 75.7MB in the end (delta: -5.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:33:08,936 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:33:08,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.36ms. Allocated memory is still 111.1MB. Free memory was 70.4MB in the beginning and 75.7MB in the end (delta: -5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:33:08,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.36ms. Allocated memory is still 111.1MB. Free memory was 70.4MB in the beginning and 75.7MB in the end (delta: -5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs --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 f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:33:11,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:33:11,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:33:11,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:33:11,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:33:11,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:33:11,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:33:11,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:33:11,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:33:11,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:33:11,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:33:11,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:33:11,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:33:11,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:33:11,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:33:11,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:33:11,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:33:11,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:33:11,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:33:11,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:33:11,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:33:11,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:33:11,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:33:11,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:33:11,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:33:11,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:33:11,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:33:11,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:33:11,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:33:11,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:33:11,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:33:11,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:33:11,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:33:11,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:33:11,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:33:11,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:33:11,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:33:11,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:33:11,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:33:11,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:33:11,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:33:11,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:33:11,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:33:11,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:33:11,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:33:11,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:33:11,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:33:11,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:33:11,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:33:11,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:33:11,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:33:11,512 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:33:11,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:33:11,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:33:11,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:33:11,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:33:11,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:33:11,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:33:11,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:33:11,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:33:11,514 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:33:11,514 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:33:11,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:33:11,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:33:11,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:33:11,515 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:33:11,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:33:11,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:33:11,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:33:11,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:33:11,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:33:11,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:33:11,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:11,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:33:11,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:33:11,521 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:33:11,521 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:33:11,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:33:11,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:33:11,523 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6bf6d70eb07e52125f91259e05d2dabd63dc1b16a64b1f25a229511f6ff83f8 [2021-11-19 13:33:11,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:33:11,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:33:11,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:33:11,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:33:11,992 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:33:11,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-19 13:33:12,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/49b347cb5/8bd14a09911f42a1adc218052560d134/FLAG92ca80673 [2021-11-19 13:33:12,749 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:33:12,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i [2021-11-19 13:33:12,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/49b347cb5/8bd14a09911f42a1adc218052560d134/FLAG92ca80673 [2021-11-19 13:33:12,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/data/49b347cb5/8bd14a09911f42a1adc218052560d134 [2021-11-19 13:33:12,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:33:12,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:33:12,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:12,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:33:12,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:33:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:12" (1/1) ... [2021-11-19 13:33:12,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c44b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:12, skipping insertion in model container [2021-11-19 13:33:12,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:12" (1/1) ... [2021-11-19 13:33:12,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:33:13,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:33:13,587 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-19 13:33:13,743 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-19 13:33:13,757 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:13,778 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:33:13,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:33:13,826 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-19 13:33:13,965 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-19 13:33:13,980 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:14,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:33:14,037 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[33021,33034] [2021-11-19 13:33:14,094 WARN L230 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_ca7ca6a0-b3c1-4163-842d-414523956ce3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-1.i[44590,44603] [2021-11-19 13:33:14,098 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:14,150 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:33:14,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14 WrapperNode [2021-11-19 13:33:14,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:14,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:33:14,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:33:14,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:33:14,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,278 INFO L137 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1041 [2021-11-19 13:33:14,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:33:14,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:33:14,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:33:14,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:33:14,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:33:14,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:33:14,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:33:14,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:33:14,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (1/1) ... [2021-11-19 13:33:14,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:33:14,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:33:14,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:33:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:33:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:33:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:33:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:33:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:33:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:33:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:33:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:33:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:33:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:33:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:33:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:33:14,847 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:33:14,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:33:14,875 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:33:20,311 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:33:20,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:33:20,335 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 13:33:20,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:33:20 BoogieIcfgContainer [2021-11-19 13:33:20,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:33:20,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:33:20,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:33:20,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:33:20,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:33:12" (1/3) ... [2021-11-19 13:33:20,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:33:20, skipping insertion in model container [2021-11-19 13:33:20,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:14" (2/3) ... [2021-11-19 13:33:20,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a468b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:33:20, skipping insertion in model container [2021-11-19 13:33:20,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:33:20" (3/3) ... [2021-11-19 13:33:20,347 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-1.i [2021-11-19 13:33:20,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:33:20,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-19 13:33:20,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:33:20,404 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 [2021-11-19 13:33:20,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-19 13:33:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:33:20,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:20,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:33:20,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 13:33:20,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:20,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364355346] [2021-11-19 13:33:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:20,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:20,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:20,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:33:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:20,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:33:20,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:20,714 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:20,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364355346] [2021-11-19 13:33:20,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364355346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:20,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:20,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:33:20,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083150757] [2021-11-19 13:33:20,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:20,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:33:20,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:33:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:33:20,797 INFO L87 Difference]: Start difference. First operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-19 13:33:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:22,867 INFO L93 Difference]: Finished difference Result 1067 states and 1132 transitions. [2021-11-19 13:33:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:33:22,870 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 [2021-11-19 13:33:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:22,892 INFO L225 Difference]: With dead ends: 1067 [2021-11-19 13:33:22,893 INFO L226 Difference]: Without dead ends: 1065 [2021-11-19 13:33:22,894 INFO L932 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 [2021-11-19 13:33:22,898 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 990 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:22,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 705 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 13:33:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-19 13:33:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1057. [2021-11-19 13:33:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 530 states have (on average 2.0886792452830187) internal successors, (1107), 1051 states have internal predecessors, (1107), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1123 transitions. [2021-11-19 13:33:23,016 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1123 transitions. Word has length 3 [2021-11-19 13:33:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:23,016 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1123 transitions. [2021-11-19 13:33:23,017 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) [2021-11-19 13:33:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1123 transitions. [2021-11-19 13:33:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:33:23,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:23,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:33:23,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:23,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:23,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 13:33:23,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:23,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532596745] [2021-11-19 13:33:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:23,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:23,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:23,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:23,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:33:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:23,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:23,367 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:23,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:23,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:23,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532596745] [2021-11-19 13:33:23,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532596745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:23,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:23,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:33:23,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561815655] [2021-11-19 13:33:23,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:23,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:23,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:23,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:23,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:23,442 INFO L87 Difference]: Start difference. First operand 1057 states and 1123 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) [2021-11-19 13:33:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:28,239 INFO L93 Difference]: Finished difference Result 1542 states and 1651 transitions. [2021-11-19 13:33:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:28,240 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 [2021-11-19 13:33:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:28,248 INFO L225 Difference]: With dead ends: 1542 [2021-11-19 13:33:28,249 INFO L226 Difference]: Without dead ends: 1542 [2021-11-19 13:33:28,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:28,251 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1167 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:28,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1592 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 13:33:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-11-19 13:33:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1092. [2021-11-19 13:33:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 574 states have (on average 2.0662020905923346) internal successors, (1186), 1086 states have internal predecessors, (1186), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1202 transitions. [2021-11-19 13:33:28,290 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1202 transitions. Word has length 3 [2021-11-19 13:33:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:28,290 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1202 transitions. [2021-11-19 13:33:28,291 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) [2021-11-19 13:33:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1202 transitions. [2021-11-19 13:33:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:33:28,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:28,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:28,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:28,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:28,503 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:28,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 13:33:28,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:28,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300299074] [2021-11-19 13:33:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:28,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:28,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:28,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:28,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:33:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:33:28,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:28,635 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:28,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:28,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:28,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300299074] [2021-11-19 13:33:28,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300299074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:28,688 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:28,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:33:28,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378168604] [2021-11-19 13:33:28,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:28,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:33:28,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:28,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:33:28,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:33:28,694 INFO L87 Difference]: Start difference. First operand 1092 states and 1202 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-19 13:33:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:30,637 INFO L93 Difference]: Finished difference Result 1420 states and 1555 transitions. [2021-11-19 13:33:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:33:30,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 [2021-11-19 13:33:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:30,648 INFO L225 Difference]: With dead ends: 1420 [2021-11-19 13:33:30,648 INFO L226 Difference]: Without dead ends: 1420 [2021-11-19 13:33:30,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:33:30,650 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 992 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:30,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1201 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 13:33:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-19 13:33:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1043. [2021-11-19 13:33:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 574 states have (on average 1.975609756097561) internal successors, (1134), 1037 states have internal predecessors, (1134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2021-11-19 13:33:30,682 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 8 [2021-11-19 13:33:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:30,683 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2021-11-19 13:33:30,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-19 13:33:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2021-11-19 13:33:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:33:30,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:30,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:30,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:33:30,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:30,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 13:33:30,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:30,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332273189] [2021-11-19 13:33:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:30,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:30,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:30,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:30,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:33:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:31,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:31,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:31,025 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:31,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:31,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:31,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332273189] [2021-11-19 13:33:31,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332273189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:31,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:31,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:33:31,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898753966] [2021-11-19 13:33:31,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:31,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:31,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:31,150 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:33:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:35,895 INFO L93 Difference]: Finished difference Result 1463 states and 1562 transitions. [2021-11-19 13:33:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-11-19 13:33:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:35,905 INFO L225 Difference]: With dead ends: 1463 [2021-11-19 13:33:35,905 INFO L226 Difference]: Without dead ends: 1463 [2021-11-19 13:33:35,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:35,906 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 1407 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:35,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1556 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 13:33:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-19 13:33:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1033. [2021-11-19 13:33:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 574 states have (on average 1.9529616724738676) internal successors, (1121), 1027 states have internal predecessors, (1121), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1137 transitions. [2021-11-19 13:33:35,937 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1137 transitions. Word has length 8 [2021-11-19 13:33:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:35,937 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1137 transitions. [2021-11-19 13:33:35,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:33:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1137 transitions. [2021-11-19 13:33:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:33:35,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:35,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:35,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:36,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:36,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:36,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-19 13:33:36,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:36,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122311047] [2021-11-19 13:33:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:36,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:36,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:33:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:36,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:36,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:36,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:36,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122311047] [2021-11-19 13:33:36,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122311047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:36,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:36,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:33:36,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712455439] [2021-11-19 13:33:36,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:36,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:36,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:36,434 INFO L87 Difference]: Start difference. First operand 1033 states and 1137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-19 13:33:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:37,208 INFO L93 Difference]: Finished difference Result 1479 states and 1615 transitions. [2021-11-19 13:33:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:33:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2021-11-19 13:33:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:37,217 INFO L225 Difference]: With dead ends: 1479 [2021-11-19 13:33:37,218 INFO L226 Difference]: Without dead ends: 1479 [2021-11-19 13:33:37,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:37,219 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 547 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:37,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3025 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:33:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-19 13:33:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1269. [2021-11-19 13:33:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 810 states have (on average 1.9395061728395062) internal successors, (1571), 1263 states have internal predecessors, (1571), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1587 transitions. [2021-11-19 13:33:37,261 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1587 transitions. Word has length 11 [2021-11-19 13:33:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1587 transitions. [2021-11-19 13:33:37,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-19 13:33:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1587 transitions. [2021-11-19 13:33:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:33:37,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:37,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:37,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:37,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:37,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr532ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1242903717, now seen corresponding path program 1 times [2021-11-19 13:33:37,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:37,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691374751] [2021-11-19 13:33:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:37,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:37,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:37,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:37,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:33:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:37,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:37,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:37,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:37,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:37,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:37,700 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 13:33:37,700 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 13:33:37,765 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 13:33:37,765 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 67 treesize of output 23 [2021-11-19 13:33:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:37,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:37,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:37,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691374751] [2021-11-19 13:33:37,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691374751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:37,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:37,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:33:37,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313275990] [2021-11-19 13:33:37,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:37,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:33:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:33:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:33:37,870 INFO L87 Difference]: Start difference. First operand 1269 states and 1587 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) [2021-11-19 13:33:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:39,237 INFO L93 Difference]: Finished difference Result 1643 states and 2031 transitions. [2021-11-19 13:33:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:39,238 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 12 [2021-11-19 13:33:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:39,246 INFO L225 Difference]: With dead ends: 1643 [2021-11-19 13:33:39,246 INFO L226 Difference]: Without dead ends: 1643 [2021-11-19 13:33:39,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:33:39,248 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 746 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:39,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 3895 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:33:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-19 13:33:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1268. [2021-11-19 13:33:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 809 states have (on average 1.9394313967861558) internal successors, (1569), 1262 states have internal predecessors, (1569), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2021-11-19 13:33:39,283 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 12 [2021-11-19 13:33:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:39,283 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2021-11-19 13:33:39,283 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) [2021-11-19 13:33:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2021-11-19 13:33:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:33:39,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:39,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:39,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 13:33:39,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:39,497 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 13:33:39,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:39,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255421132] [2021-11-19 13:33:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:39,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:39,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:39,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:33:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:39,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:33:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:39,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:39,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:39,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255421132] [2021-11-19 13:33:39,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255421132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:39,736 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:39,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:33:39,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690425379] [2021-11-19 13:33:39,736 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:39,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:39,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:39,738 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:39,773 INFO L93 Difference]: Finished difference Result 1208 states and 1499 transitions. [2021-11-19 13:33:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:33:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-19 13:33:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:39,780 INFO L225 Difference]: With dead ends: 1208 [2021-11-19 13:33:39,780 INFO L226 Difference]: Without dead ends: 1208 [2021-11-19 13:33:39,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:39,782 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 976 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:39,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1071 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:33:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-19 13:33:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2021-11-19 13:33:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 773 states have (on average 1.9184993531694696) internal successors, (1483), 1202 states have internal predecessors, (1483), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1499 transitions. [2021-11-19 13:33:39,808 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1499 transitions. Word has length 18 [2021-11-19 13:33:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:39,809 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1499 transitions. [2021-11-19 13:33:39,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1499 transitions. [2021-11-19 13:33:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:33:39,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:39,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:39,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:40,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:40,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 13:33:40,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:40,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557250214] [2021-11-19 13:33:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:40,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:40,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:33:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:40,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:40,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:40,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:40,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557250214] [2021-11-19 13:33:40,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557250214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:40,258 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:40,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:33:40,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442853820] [2021-11-19 13:33:40,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:40,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:33:40,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:33:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:40,261 INFO L87 Difference]: Start difference. First operand 1208 states and 1499 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 13:33:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:40,368 INFO L93 Difference]: Finished difference Result 1180 states and 1443 transitions. [2021-11-19 13:33:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 20 [2021-11-19 13:33:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:40,375 INFO L225 Difference]: With dead ends: 1180 [2021-11-19 13:33:40,376 INFO L226 Difference]: Without dead ends: 1180 [2021-11-19 13:33:40,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:33:40,377 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1884 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:40,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1949 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:33:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-19 13:33:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2021-11-19 13:33:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 757 states have (on average 1.8824306472919419) internal successors, (1425), 1172 states have internal predecessors, (1425), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1441 transitions. [2021-11-19 13:33:40,405 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1441 transitions. Word has length 20 [2021-11-19 13:33:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:40,406 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1441 transitions. [2021-11-19 13:33:40,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-19 13:33:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1441 transitions. [2021-11-19 13:33:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:33:40,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:40,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:40,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:40,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 13:33:40,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:40,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872912660] [2021-11-19 13:33:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:40,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:40,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:40,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:33:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:40,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:40,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:40,772 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:40,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:40,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:40,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872912660] [2021-11-19 13:33:40,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872912660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:40,997 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:40,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:33:40,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668046074] [2021-11-19 13:33:40,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:40,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:40,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:40,999 INFO L87 Difference]: Start difference. First operand 1178 states and 1441 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-19 13:33:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:42,972 INFO L93 Difference]: Finished difference Result 1660 states and 2054 transitions. [2021-11-19 13:33:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:33:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-19 13:33:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:42,980 INFO L225 Difference]: With dead ends: 1660 [2021-11-19 13:33:42,981 INFO L226 Difference]: Without dead ends: 1660 [2021-11-19 13:33:42,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:42,982 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1738 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:42,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1063 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 13:33:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-11-19 13:33:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1174. [2021-11-19 13:33:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 757 states have (on average 1.8718626155878468) internal successors, (1417), 1168 states have internal predecessors, (1417), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1433 transitions. [2021-11-19 13:33:43,011 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1433 transitions. Word has length 34 [2021-11-19 13:33:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:43,012 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1433 transitions. [2021-11-19 13:33:43,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-19 13:33:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1433 transitions. [2021-11-19 13:33:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:33:43,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:43,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:43,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 13:33:43,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:43,224 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 13:33:43,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:43,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796845939] [2021-11-19 13:33:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:43,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:43,226 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:43,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:33:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:43,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:43,376 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:43,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:44,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:44,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796845939] [2021-11-19 13:33:44,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796845939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:44,097 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:44,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:33:44,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317265138] [2021-11-19 13:33:44,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:44,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:33:44,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:33:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:33:44,099 INFO L87 Difference]: Start difference. First operand 1174 states and 1433 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-19 13:33:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:50,636 INFO L93 Difference]: Finished difference Result 1791 states and 2207 transitions. [2021-11-19 13:33:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:33:50,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 34 [2021-11-19 13:33:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:50,647 INFO L225 Difference]: With dead ends: 1791 [2021-11-19 13:33:50,647 INFO L226 Difference]: Without dead ends: 1791 [2021-11-19 13:33:50,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:50,648 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 1279 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:50,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 2916 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 13:33:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-19 13:33:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1170. [2021-11-19 13:33:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 757 states have (on average 1.8612945838837516) internal successors, (1409), 1164 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1425 transitions. [2021-11-19 13:33:50,678 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1425 transitions. Word has length 34 [2021-11-19 13:33:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:50,679 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 1425 transitions. [2021-11-19 13:33:50,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-19 13:33:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1425 transitions. [2021-11-19 13:33:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:33:50,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:50,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:50,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:50,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:50,903 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 13:33:50,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:50,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497930106] [2021-11-19 13:33:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:50,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:50,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:50,906 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:50,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:33:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:51,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:51,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:51,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:51,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:51,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497930106] [2021-11-19 13:33:51,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497930106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:51,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:51,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:33:51,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321024915] [2021-11-19 13:33:51,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:51,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:51,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:51,378 INFO L87 Difference]: Start difference. First operand 1170 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-19 13:33:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:51,442 INFO L93 Difference]: Finished difference Result 1158 states and 1405 transitions. [2021-11-19 13:33:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-19 13:33:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:51,450 INFO L225 Difference]: With dead ends: 1158 [2021-11-19 13:33:51,450 INFO L226 Difference]: Without dead ends: 1158 [2021-11-19 13:33:51,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:51,451 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 923 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:51,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1927 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:33:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-19 13:33:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-19 13:33:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 745 states have (on average 1.8644295302013423) internal successors, (1389), 1152 states have internal predecessors, (1389), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:33:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1405 transitions. [2021-11-19 13:33:51,474 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1405 transitions. Word has length 52 [2021-11-19 13:33:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:51,475 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1405 transitions. [2021-11-19 13:33:51,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-19 13:33:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1405 transitions. [2021-11-19 13:33:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:33:51,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:51,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:51,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:51,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:51,690 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:33:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 13:33:51,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:51,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065413222] [2021-11-19 13:33:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:51,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:51,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:51,695 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:51,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:33:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:51,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:33:51,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:51,983 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:51,989 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:33:52,701 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 13:33:52,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-19 13:33:52,719 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:33:52,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 13:33:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:52,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:00,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:00,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065413222] [2021-11-19 13:34:00,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065413222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:00,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:00,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:34:00,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005544995] [2021-11-19 13:34:00,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:00,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:34:00,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:34:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-19 13:34:00,041 INFO L87 Difference]: Start difference. First operand 1158 states and 1405 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-19 13:34:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:04,947 INFO L93 Difference]: Finished difference Result 1769 states and 2114 transitions. [2021-11-19 13:34:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-19 13:34:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:04,957 INFO L225 Difference]: With dead ends: 1769 [2021-11-19 13:34:04,957 INFO L226 Difference]: Without dead ends: 1769 [2021-11-19 13:34:04,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2021-11-19 13:34:04,958 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1532 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1074 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:04,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1868 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1434 Invalid, 0 Unknown, 1074 Unchecked, 4.8s Time] [2021-11-19 13:34:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-19 13:34:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1136. [2021-11-19 13:34:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 755 states have (on average 1.8211920529801324) internal successors, (1375), 1130 states have internal predecessors, (1375), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:34:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1391 transitions. [2021-11-19 13:34:04,983 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1391 transitions. Word has length 60 [2021-11-19 13:34:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:04,984 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1391 transitions. [2021-11-19 13:34:04,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-19 13:34:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1391 transitions. [2021-11-19 13:34:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:34:04,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:04,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:05,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:05,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:05,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 13:34:05,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:05,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225669281] [2021-11-19 13:34:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:05,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:05,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:05,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:05,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:34:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:05,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:34:05,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:05,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:05,711 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 8 treesize of output 6 [2021-11-19 13:34:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:05,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:05,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225669281] [2021-11-19 13:34:05,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225669281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:05,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:05,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:34:05,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867323687] [2021-11-19 13:34:05,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:05,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:34:05,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:34:05,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:34:05,997 INFO L87 Difference]: Start difference. First operand 1136 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:34:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:07,651 INFO L93 Difference]: Finished difference Result 1134 states and 1389 transitions. [2021-11-19 13:34:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-19 13:34:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:07,657 INFO L225 Difference]: With dead ends: 1134 [2021-11-19 13:34:07,657 INFO L226 Difference]: Without dead ends: 1134 [2021-11-19 13:34:07,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:34:07,658 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 2527 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:07,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 562 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:34:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-19 13:34:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-19 13:34:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 755 states have (on average 1.818543046357616) internal successors, (1373), 1128 states have internal predecessors, (1373), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:34:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1389 transitions. [2021-11-19 13:34:07,678 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1389 transitions. Word has length 62 [2021-11-19 13:34:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:07,679 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1389 transitions. [2021-11-19 13:34:07,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:34:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1389 transitions. [2021-11-19 13:34:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:34:07,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:07,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:07,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:07,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:07,894 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 13:34:07,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:07,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142136853] [2021-11-19 13:34:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:07,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:07,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:07,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:34:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:08,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:34:08,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:08,181 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:34:08,197 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 [2021-11-19 13:34:08,237 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 25 treesize of output 13 [2021-11-19 13:34:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:08,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:08,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:08,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142136853] [2021-11-19 13:34:08,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142136853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:08,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:08,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:34:08,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881406014] [2021-11-19 13:34:08,376 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:08,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:08,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:08,378 INFO L87 Difference]: Start difference. First operand 1134 states and 1389 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:11,184 INFO L93 Difference]: Finished difference Result 1133 states and 1388 transitions. [2021-11-19 13:34:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:34:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 13:34:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:11,189 INFO L225 Difference]: With dead ends: 1133 [2021-11-19 13:34:11,189 INFO L226 Difference]: Without dead ends: 1133 [2021-11-19 13:34:11,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:34:11,190 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:11,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2377 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 13:34:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-19 13:34:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-11-19 13:34:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 755 states have (on average 1.8172185430463577) internal successors, (1372), 1127 states have internal predecessors, (1372), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:34:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1388 transitions. [2021-11-19 13:34:11,208 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1388 transitions. Word has length 65 [2021-11-19 13:34:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:11,208 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1388 transitions. [2021-11-19 13:34:11,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1388 transitions. [2021-11-19 13:34:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:34:11,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:11,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:11,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:11,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:11,423 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 13:34:11,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:11,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17607569] [2021-11-19 13:34:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:11,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:11,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:11,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:34:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:34:11,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:11,760 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:34:11,786 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 19 treesize of output 15 [2021-11-19 13:34:11,795 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 [2021-11-19 13:34:11,856 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 39 treesize of output 27 [2021-11-19 13:34:11,864 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 24 treesize of output 12 [2021-11-19 13:34:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:11,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:12,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:12,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17607569] [2021-11-19 13:34:12,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17607569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:12,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:12,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:34:12,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662849470] [2021-11-19 13:34:12,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:12,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:12,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:12,238 INFO L87 Difference]: Start difference. First operand 1133 states and 1388 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-19 13:34:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:19,441 INFO L93 Difference]: Finished difference Result 1132 states and 1387 transitions. [2021-11-19 13:34:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:34:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 65 [2021-11-19 13:34:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:19,446 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 13:34:19,447 INFO L226 Difference]: Without dead ends: 1132 [2021-11-19 13:34:19,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:34:19,448 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:19,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2400 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 13:34:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-19 13:34:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2021-11-19 13:34:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 754 states have (on average 1.8183023872679045) internal successors, (1371), 1126 states have internal predecessors, (1371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:34:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1387 transitions. [2021-11-19 13:34:19,466 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1387 transitions. Word has length 65 [2021-11-19 13:34:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:19,467 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1387 transitions. [2021-11-19 13:34:19,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-19 13:34:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1387 transitions. [2021-11-19 13:34:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:34:19,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:19,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:19,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 13:34:19,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:19,698 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 845908815, now seen corresponding path program 1 times [2021-11-19 13:34:19,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:19,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184233623] [2021-11-19 13:34:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:19,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:19,701 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:19,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:34:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:19,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:34:19,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:20,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:20,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:20,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184233623] [2021-11-19 13:34:20,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184233623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:20,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:20,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:34:20,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960555151] [2021-11-19 13:34:20,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:20,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:34:20,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:34:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:34:20,275 INFO L87 Difference]: Start difference. First operand 1132 states and 1387 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:34:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:20,386 INFO L93 Difference]: Finished difference Result 1142 states and 1400 transitions. [2021-11-19 13:34:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:34:20,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-19 13:34:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:20,393 INFO L225 Difference]: With dead ends: 1142 [2021-11-19 13:34:20,393 INFO L226 Difference]: Without dead ends: 1142 [2021-11-19 13:34:20,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:20,394 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 9 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:20,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2754 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-19 13:34:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2021-11-19 13:34:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 762 states have (on average 1.81496062992126) internal successors, (1383), 1135 states have internal predecessors, (1383), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:34:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1400 transitions. [2021-11-19 13:34:20,425 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1400 transitions. Word has length 73 [2021-11-19 13:34:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:20,426 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1400 transitions. [2021-11-19 13:34:20,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:34:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1400 transitions. [2021-11-19 13:34:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:34:20,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:20,427 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:20,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:20,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:20,644 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1863463505, now seen corresponding path program 1 times [2021-11-19 13:34:20,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:20,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530037661] [2021-11-19 13:34:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:20,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:20,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:20,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:20,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:34:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:20,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:34:20,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:21,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:21,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:21,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530037661] [2021-11-19 13:34:21,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530037661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:21,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1671203898] [2021-11-19 13:34:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:21,232 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:34:21,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:34:21,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:34:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:21,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:34:21,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:21,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:21,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1671203898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:21,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52425220] [2021-11-19 13:34:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:21,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:21,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:21,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:21,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 13:34:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:21,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:34:21,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:22,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:22,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52425220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:22,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:34:22,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:34:22,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347865530] [2021-11-19 13:34:22,424 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:34:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:34:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:34:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:22,426 INFO L87 Difference]: Start difference. First operand 1142 states and 1400 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:34:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:22,947 INFO L93 Difference]: Finished difference Result 1156 states and 1417 transitions. [2021-11-19 13:34:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:34:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-19 13:34:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:22,954 INFO L225 Difference]: With dead ends: 1156 [2021-11-19 13:34:22,955 INFO L226 Difference]: Without dead ends: 1150 [2021-11-19 13:34:22,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:34:22,956 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 26 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:22,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 5504 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:34:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-11-19 13:34:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1148. [2021-11-19 13:34:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 768 states have (on average 1.8098958333333333) internal successors, (1390), 1141 states have internal predecessors, (1390), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:34:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1407 transitions. [2021-11-19 13:34:22,990 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1407 transitions. Word has length 75 [2021-11-19 13:34:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:22,990 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1407 transitions. [2021-11-19 13:34:22,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:34:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1407 transitions. [2021-11-19 13:34:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:34:22,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:22,992 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:23,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:23,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:23,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:23,599 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:34:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1287850607, now seen corresponding path program 2 times [2021-11-19 13:34:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:23,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713838727] [2021-11-19 13:34:23,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:23,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:23,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:23,601 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:34:23,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:34:23,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:23,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:34:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:24,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:24,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:24,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713838727] [2021-11-19 13:34:24,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713838727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:24,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [676934129] [2021-11-19 13:34:24,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:24,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:34:24,628 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:34:24,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 13:34:25,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:34:25,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:25,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:34:25,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:25,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:25,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [676934129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:25,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625724536] [2021-11-19 13:34:25,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:25,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:25,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:25,686 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:25,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 13:34:45,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:34:45,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:45,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:34:45,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:45,887 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:34:46,144 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:34:46,163 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:34:46,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-19 13:34:46,241 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 [2021-11-19 13:34:46,263 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 23 treesize of output 19 [2021-11-19 13:34:46,492 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 31 treesize of output 19 [2021-11-19 13:34:46,496 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 19 treesize of output 13 [2021-11-19 13:36:58,630 WARN L227 SmtUtils]: Spent 24.57s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:36:58,631 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 13:36:58,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-19 13:37:19,701 WARN L227 SmtUtils]: Spent 21.06s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:37:19,702 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 13:37:19,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-19 13:37:28,936 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:37:28,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-19 13:37:28,955 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:37:28,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-19 13:37:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:41,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:55,836 WARN L227 SmtUtils]: Spent 13.96s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:38:15,369 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (let ((.cse3 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (let ((.cse2 (bvadd .cse4 (_ bv20 32)))) (and (bvule .cse2 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (bvule (bvadd (_ bv16 32) .cse4) .cse2))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-19 13:39:21,158 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))))) is different from false [2021-11-19 13:40:44,233 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse5 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse7))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse6) (bvadd .cse6 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))))) is different from true [2021-11-19 13:40:50,970 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from false [2021-11-19 13:40:52,986 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from true [2021-11-19 13:43:18,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 13:43:18,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:43:18,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 13:43:18,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62774433] [2021-11-19 13:43:18,337 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:43:18,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:43:18,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:43:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1113, Unknown=143, NotChecked=300, Total=1722 [2021-11-19 13:43:18,339 INFO L87 Difference]: Start difference. First operand 1148 states and 1407 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:44:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:21,852 INFO L93 Difference]: Finished difference Result 1174 states and 1443 transitions. [2021-11-19 13:44:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 13:44:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-19 13:44:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:21,861 INFO L225 Difference]: With dead ends: 1174 [2021-11-19 13:44:21,861 INFO L226 Difference]: Without dead ends: 1170 [2021-11-19 13:44:21,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 457.6s TimeCoverageRelationStatistics Valid=507, Invalid=2544, Unknown=157, NotChecked=452, Total=3660 [2021-11-19 13:44:21,863 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 79 mSDsluCounter, 6452 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 7377 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:21,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 7377 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:44:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-11-19 13:44:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1160. [2021-11-19 13:44:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 780 states have (on average 1.8025641025641026) internal successors, (1406), 1153 states have internal predecessors, (1406), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:44:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1423 transitions. [2021-11-19 13:44:21,889 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1423 transitions. Word has length 79 [2021-11-19 13:44:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:21,890 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1423 transitions. [2021-11-19 13:44:21,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:44:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1423 transitions. [2021-11-19 13:44:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:44:21,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:21,896 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:21,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-19 13:44:22,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:22,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:22,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:22,523 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:44:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1034394641, now seen corresponding path program 3 times [2021-11-19 13:44:22,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:22,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040238649] [2021-11-19 13:44:22,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:44:22,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:22,526 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:22,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:44:23,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:44:23,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:23,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:44:23,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:23,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:25,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:25,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040238649] [2021-11-19 13:44:25,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040238649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:25,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [39692424] [2021-11-19 13:44:25,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:44:25,813 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:44:25,814 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:44:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:44:28,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:44:28,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:28,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:44:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:28,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [39692424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:28,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119905778] [2021-11-19 13:44:28,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:44:28,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:44:28,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:44:28,808 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:44:28,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca7ca6a0-b3c1-4163-842d-414523956ce3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process