./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:54:14,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:54:14,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:54:14,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:54:14,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:54:14,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:54:14,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:54:14,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:54:15,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:54:15,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:54:15,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:54:15,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:54:15,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:54:15,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:54:15,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:54:15,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:54:15,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:54:15,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:54:15,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:54:15,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:54:15,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:54:15,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:54:15,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:54:15,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:54:15,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:54:15,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:54:15,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:54:15,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:54:15,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:54:15,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:54:15,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:54:15,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:54:15,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:54:15,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:54:15,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:54:15,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:54:15,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:54:15,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:54:15,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:54:15,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:54:15,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:54:15,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:54:15,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:54:15,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:54:15,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:54:15,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:54:15,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:54:15,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:54:15,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:54:15,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:54:15,114 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:54:15,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:54:15,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:54:15,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:54:15,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:54:15,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:54:15,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:54:15,116 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:54:15,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:54:15,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:54:15,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:54:15,118 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:54:15,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:54:15,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:54:15,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:54:15,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:54:15,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:54:15,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:54:15,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:54:15,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:54:15,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:54:15,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:54:15,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:54:15,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:54:15,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:54:15,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:54:15,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:54:15,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:54:15,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:54:15,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:54:15,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:54:15,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:54:15,123 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-19 14:54:15,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:54:15,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:54:15,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:54:15,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:54:15,500 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:54:15,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-19 14:54:15,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/428aae6c7/602452267f4947c2832f14c416eddc02/FLAG4fcb257c4 [2021-11-19 14:54:16,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:54:16,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-19 14:54:16,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/428aae6c7/602452267f4947c2832f14c416eddc02/FLAG4fcb257c4 [2021-11-19 14:54:16,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/428aae6c7/602452267f4947c2832f14c416eddc02 [2021-11-19 14:54:16,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:54:16,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:54:16,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:54:16,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:54:16,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:54:16,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:54:16" (1/1) ... [2021-11-19 14:54:16,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f15d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:16, skipping insertion in model container [2021-11-19 14:54:16,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:54:16" (1/1) ... [2021-11-19 14:54:17,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:54:17,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:54:17,838 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-19 14:54:18,261 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-19 14:54:18,295 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:54:18,308 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 14:54:18,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ffdacff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:18, skipping insertion in model container [2021-11-19 14:54:18,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:54:18,312 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:54:18,317 INFO L158 Benchmark]: Toolchain (without parser) took 1323.65ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 48.0MB in the beginning and 74.2MB in the end (delta: -26.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-19 14:54:18,319 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:54:18,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1318.92ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 47.8MB in the beginning and 74.2MB in the end (delta: -26.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-19 14:54:18,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1318.92ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 47.8MB in the beginning and 74.2MB in the end (delta: -26.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:54:20,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:54:20,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:54:20,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:54:20,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:54:20,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:54:21,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:54:21,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:54:21,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:54:21,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:54:21,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:54:21,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:54:21,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:54:21,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:54:21,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:54:21,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:54:21,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:54:21,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:54:21,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:54:21,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:54:21,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:54:21,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:54:21,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:54:21,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:54:21,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:54:21,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:54:21,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:54:21,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:54:21,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:54:21,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:54:21,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:54:21,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:54:21,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:54:21,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:54:21,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:54:21,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:54:21,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:54:21,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:54:21,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:54:21,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:54:21,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:54:21,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:54:21,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:54:21,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:54:21,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:54:21,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:54:21,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:54:21,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:54:21,118 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:54:21,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:54:21,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:54:21,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:54:21,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:54:21,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:54:21,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:54:21,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:54:21,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:54:21,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:54:21,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:54:21,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:54:21,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:54:21,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:54:21,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:54:21,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:54:21,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:54:21,123 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:54:21,123 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:54:21,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:54:21,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:54:21,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:54:21,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:54:21,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:54:21,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:54:21,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:54:21,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:54:21,125 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:54:21,125 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:54:21,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:54:21,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:54:21,126 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-19 14:54:21,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:54:21,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:54:21,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:54:21,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:54:21,651 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:54:21,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-19 14:54:21,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/54e00f619/59f9a919b28942dcb95422ee66693fdb/FLAG911300599 [2021-11-19 14:54:22,692 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:54:22,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-19 14:54:22,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/54e00f619/59f9a919b28942dcb95422ee66693fdb/FLAG911300599 [2021-11-19 14:54:22,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/data/54e00f619/59f9a919b28942dcb95422ee66693fdb [2021-11-19 14:54:22,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:54:22,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:54:22,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:54:22,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:54:22,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:54:22,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:54:22" (1/1) ... [2021-11-19 14:54:22,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20597204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:22, skipping insertion in model container [2021-11-19 14:54:22,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:54:22" (1/1) ... [2021-11-19 14:54:22,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:54:22,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:54:23,448 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-19 14:54:23,784 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-19 14:54:23,798 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:54:23,813 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:54:23,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:54:23,863 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-19 14:54:23,972 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-19 14:54:23,987 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:54:24,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:54:24,040 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-19 14:54:24,158 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_2026b9e5-6ed7-4ac7-b173-745446ec5f47/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-19 14:54:24,187 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:54:24,227 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:54:24,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24 WrapperNode [2021-11-19 14:54:24,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:54:24,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:54:24,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:54:24,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:54:24,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,380 INFO L137 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3034 [2021-11-19 14:54:24,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:54:24,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:54:24,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:54:24,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:54:24,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:54:24,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:54:24,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:54:24,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:54:24,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (1/1) ... [2021-11-19 14:54:24,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:54:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:54:24,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:54:24,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:54:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:54:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:54:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:54:24,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:54:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:54:24,740 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:54:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:54:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:54:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:54:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:54:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:54:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:54:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:54:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:54:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:54:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:54:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:54:25,037 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:54:25,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:54:25,044 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:54:32,685 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:54:32,719 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:54:32,721 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 14:54:32,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:54:32 BoogieIcfgContainer [2021-11-19 14:54:32,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:54:32,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:54:32,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:54:32,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:54:32,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:54:22" (1/3) ... [2021-11-19 14:54:32,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8de765d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:54:32, skipping insertion in model container [2021-11-19 14:54:32,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:54:24" (2/3) ... [2021-11-19 14:54:32,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8de765d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:54:32, skipping insertion in model container [2021-11-19 14:54:32,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:54:32" (3/3) ... [2021-11-19 14:54:32,737 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2021-11-19 14:54:32,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:54:32,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-19 14:54:32,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:54:32,830 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 14:54:32,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-19 14:54:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 14:54:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:54:32,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:32,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:54:32,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:54:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 14:54:32,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:32,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003868968] [2021-11-19 14:54:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:32,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:32,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:32,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:32,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:54:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:33,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:54:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:33,333 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 14:54:33,344 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 14:54:33,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:33,362 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 14:54:33,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:33,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003868968] [2021-11-19 14:54:33,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003868968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:33,365 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:33,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:54:33,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009331350] [2021-11-19 14:54:33,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:33,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:54:33,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:54:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:54:33,431 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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 14:54:37,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:37,605 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-11-19 14:54:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:54:37,609 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 14:54:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:37,689 INFO L225 Difference]: With dead ends: 2235 [2021-11-19 14:54:37,689 INFO L226 Difference]: Without dead ends: 2233 [2021-11-19 14:54:37,691 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 14:54:37,699 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:37,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 14:54:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-19 14:54:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-11-19 14:54:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 14:54:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-11-19 14:54:38,293 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-11-19 14:54:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-11-19 14:54:38,294 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 14:54:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-11-19 14:54:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:54:38,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:38,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:54:38,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:38,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:38,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:54:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 14:54:38,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:38,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793581802] [2021-11-19 14:54:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:38,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:38,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:38,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:54:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:38,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:54:38,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:38,684 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 14:54:38,702 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 14:54:38,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:38,773 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 14:54:38,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:38,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793581802] [2021-11-19 14:54:38,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793581802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:38,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:38,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:54:38,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153181225] [2021-11-19 14:54:38,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:38,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:54:38,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:54:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:54:38,777 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 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 14:54:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:50,789 INFO L93 Difference]: Finished difference Result 3538 states and 5631 transitions. [2021-11-19 14:54:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:54:50,789 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 14:54:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:50,816 INFO L225 Difference]: With dead ends: 3538 [2021-11-19 14:54:50,817 INFO L226 Difference]: Without dead ends: 3538 [2021-11-19 14:54:50,817 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 14:54:50,819 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 4607 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:50,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 4902 Invalid, 2394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [518 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-11-19 14:54:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-19 14:54:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2090. [2021-11-19 14:54:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1076 states have (on average 2.0315985130111525) internal successors, (2186), 2084 states have internal predecessors, (2186), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 14:54:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3192 transitions. [2021-11-19 14:54:51,139 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3192 transitions. Word has length 3 [2021-11-19 14:54:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:51,140 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3192 transitions. [2021-11-19 14:54:51,140 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 14:54:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3192 transitions. [2021-11-19 14:54:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:54:51,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:51,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:51,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:54:51,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:51,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:54:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 14:54:51,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:51,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811821714] [2021-11-19 14:54:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:51,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:51,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:51,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:54:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:51,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:54:51,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:51,509 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 14:54:51,526 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 14:54:51,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:51,549 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 14:54:51,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:51,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811821714] [2021-11-19 14:54:51,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811821714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:51,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:51,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:54:51,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032695392] [2021-11-19 14:54:51,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:54:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:54:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:54:51,554 INFO L87 Difference]: Start difference. First operand 2090 states and 3192 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 14:54:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:54,889 INFO L93 Difference]: Finished difference Result 3257 states and 5376 transitions. [2021-11-19 14:54:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:54:54,892 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 14:54:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:54,919 INFO L225 Difference]: With dead ends: 3257 [2021-11-19 14:54:54,919 INFO L226 Difference]: Without dead ends: 3257 [2021-11-19 14:54:54,920 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 14:54:54,921 INFO L933 BasicCegarLoop]: 4868 mSDtfsCounter, 1806 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:54,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7126 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:54:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-19 14:54:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2043. [2021-11-19 14:54:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1076 states have (on average 1.9851301115241635) internal successors, (2136), 2037 states have internal predecessors, (2136), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 14:54:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3142 transitions. [2021-11-19 14:54:55,220 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3142 transitions. Word has length 8 [2021-11-19 14:54:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:55,221 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3142 transitions. [2021-11-19 14:54:55,221 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 14:54:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3142 transitions. [2021-11-19 14:54:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:54:55,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:55,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:54:55,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:55,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:54:55,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:54:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 14:54:55,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:55,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272648288] [2021-11-19 14:54:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:54:55,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:55,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:55,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:55,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:54:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:54:55,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:54:55,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:55,582 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 14:54:55,628 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 14:54:55,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:55,734 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 14:54:55,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:55,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272648288] [2021-11-19 14:54:55,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272648288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:54:55,735 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:54:55,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:54:55,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973399171] [2021-11-19 14:54:55,736 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:54:55,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:54:55,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:54:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:54:55,737 INFO L87 Difference]: Start difference. First operand 2043 states and 3142 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 14:55:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:03,970 INFO L93 Difference]: Finished difference Result 3287 states and 5370 transitions. [2021-11-19 14:55:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:55:03,972 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 14:55:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:04,004 INFO L225 Difference]: With dead ends: 3287 [2021-11-19 14:55:04,005 INFO L226 Difference]: Without dead ends: 3287 [2021-11-19 14:55:04,005 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 14:55:04,007 INFO L933 BasicCegarLoop]: 5028 mSDtfsCounter, 3022 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:04,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 7450 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-19 14:55:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-11-19 14:55:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2033. [2021-11-19 14:55:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1076 states have (on average 1.9730483271375465) internal successors, (2123), 2027 states have internal predecessors, (2123), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 14:55:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3129 transitions. [2021-11-19 14:55:04,408 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3129 transitions. Word has length 8 [2021-11-19 14:55:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:04,409 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3129 transitions. [2021-11-19 14:55:04,409 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 14:55:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3129 transitions. [2021-11-19 14:55:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:55:04,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:04,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:04,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:04,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:04,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:04,627 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-11-19 14:55:04,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:04,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037113122] [2021-11-19 14:55:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:04,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:04,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:04,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:55:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:04,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:55:04,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:04,898 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 14:55:04,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:04,999 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 14:55:05,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:05,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037113122] [2021-11-19 14:55:05,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037113122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:05,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:05,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:55:05,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955437842] [2021-11-19 14:55:05,001 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:05,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:55:05,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:55:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:55:05,004 INFO L87 Difference]: Start difference. First operand 2033 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 14:55:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:05,385 INFO L93 Difference]: Finished difference Result 3496 states and 5626 transitions. [2021-11-19 14:55:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:55:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 14:55:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:05,411 INFO L225 Difference]: With dead ends: 3496 [2021-11-19 14:55:05,411 INFO L226 Difference]: Without dead ends: 3496 [2021-11-19 14:55:05,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 14:55:05,413 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 1560 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:05,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6497 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:55:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-19 14:55:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3203. [2021-11-19 14:55:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 1746 states have (on average 1.9558991981672393) internal successors, (3415), 3197 states have internal predecessors, (3415), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5421 transitions. [2021-11-19 14:55:05,797 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5421 transitions. Word has length 11 [2021-11-19 14:55:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:05,797 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5421 transitions. [2021-11-19 14:55:05,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 14:55:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5421 transitions. [2021-11-19 14:55:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:55:05,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:05,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:05,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:05,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:05,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-19 14:55:06,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:06,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532363813] [2021-11-19 14:55:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:06,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:06,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:06,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:55:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:06,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:55:06,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:06,195 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 14:55:06,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:06,228 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 14:55:06,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:06,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532363813] [2021-11-19 14:55:06,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532363813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:06,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:06,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:55:06,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838235280] [2021-11-19 14:55:06,230 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:06,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:55:06,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:55:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:55:06,232 INFO L87 Difference]: Start difference. First operand 3203 states and 5421 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 14:55:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:07,367 INFO L93 Difference]: Finished difference Result 3357 states and 5561 transitions. [2021-11-19 14:55:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:55:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 13 [2021-11-19 14:55:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:07,395 INFO L225 Difference]: With dead ends: 3357 [2021-11-19 14:55:07,395 INFO L226 Difference]: Without dead ends: 3357 [2021-11-19 14:55:07,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 14:55:07,397 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2788 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:07,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 4523 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:55:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-11-19 14:55:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3143. [2021-11-19 14:55:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 1710 states have (on average 1.946783625730994) internal successors, (3329), 3137 states have internal predecessors, (3329), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5335 transitions. [2021-11-19 14:55:07,728 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5335 transitions. Word has length 13 [2021-11-19 14:55:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:07,728 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5335 transitions. [2021-11-19 14:55:07,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 14:55:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5335 transitions. [2021-11-19 14:55:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:55:07,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:07,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:55:07,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:07,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:07,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-11-19 14:55:07,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:07,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112384435] [2021-11-19 14:55:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:07,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:07,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:07,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:07,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:55:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:08,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:55:08,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:08,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:55:08,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:55:08,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:55:08,211 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 14:55:08,211 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 14:55:08,300 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:55:08,301 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 14:55:08,337 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 14:55:08,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:08,421 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 14:55:08,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:08,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112384435] [2021-11-19 14:55:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112384435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:08,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:08,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:55:08,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159980401] [2021-11-19 14:55:08,423 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:08,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:55:08,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:55:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:55:08,425 INFO L87 Difference]: Start difference. First operand 3143 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14:55:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:13,665 INFO L93 Difference]: Finished difference Result 5460 states and 9683 transitions. [2021-11-19 14:55:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:55:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-19 14:55:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:13,704 INFO L225 Difference]: With dead ends: 5460 [2021-11-19 14:55:13,704 INFO L226 Difference]: Without dead ends: 5460 [2021-11-19 14:55:13,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 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 14:55:13,706 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2664 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:13,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 9274 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:55:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-11-19 14:55:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3142. [2021-11-19 14:55:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 1709 states have (on average 1.9467524868344062) internal successors, (3327), 3136 states have internal predecessors, (3327), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5333 transitions. [2021-11-19 14:55:14,283 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 5333 transitions. Word has length 14 [2021-11-19 14:55:14,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:14,284 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 5333 transitions. [2021-11-19 14:55:14,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14:55:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 5333 transitions. [2021-11-19 14:55:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:55:14,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:14,286 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 14:55:14,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:14,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:14,506 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 14:55:14,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:14,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652110526] [2021-11-19 14:55:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:14,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:14,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:14,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:55:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:14,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:55:14,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:14,700 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 14:55:14,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:14,735 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 14:55:14,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:14,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652110526] [2021-11-19 14:55:14,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652110526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:14,735 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:14,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:55:14,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033920080] [2021-11-19 14:55:14,736 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:14,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:55:14,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:55:14,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:55:14,736 INFO L87 Difference]: Start difference. First operand 3142 states and 5333 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 14:55:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:14,799 INFO L93 Difference]: Finished difference Result 3082 states and 5247 transitions. [2021-11-19 14:55:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:55:14,800 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 14:55:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:14,810 INFO L225 Difference]: With dead ends: 3082 [2021-11-19 14:55:14,811 INFO L226 Difference]: Without dead ends: 3082 [2021-11-19 14:55:14,811 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 14:55:14,812 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1935 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 4010 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 14:55:14,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 4010 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:55:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-19 14:55:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3082. [2021-11-19 14:55:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 1673 states have (on average 1.9372384937238494) internal successors, (3241), 3076 states have internal predecessors, (3241), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5247 transitions. [2021-11-19 14:55:15,147 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5247 transitions. Word has length 18 [2021-11-19 14:55:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:15,148 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5247 transitions. [2021-11-19 14:55:15,148 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 14:55:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5247 transitions. [2021-11-19 14:55:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:55:15,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:15,149 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 14:55:15,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:15,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:15,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 14:55:15,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:15,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560035935] [2021-11-19 14:55:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:15,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:15,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:15,373 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:15,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:55:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:15,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:55:15,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:15,685 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 14:55:15,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:15,738 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 14:55:15,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:15,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560035935] [2021-11-19 14:55:15,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560035935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:15,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:15,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:55:15,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725714479] [2021-11-19 14:55:15,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:15,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:55:15,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:55:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:55:15,740 INFO L87 Difference]: Start difference. First operand 3082 states and 5247 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 14:55:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:16,839 INFO L93 Difference]: Finished difference Result 3054 states and 5191 transitions. [2021-11-19 14:55:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:55:16,840 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 14:55:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:16,847 INFO L225 Difference]: With dead ends: 3054 [2021-11-19 14:55:16,847 INFO L226 Difference]: Without dead ends: 3054 [2021-11-19 14:55:16,848 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 14:55:16,849 INFO L933 BasicCegarLoop]: 2911 mSDtfsCounter, 3802 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:16,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 6342 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:55:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-19 14:55:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3052. [2021-11-19 14:55:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1657 states have (on average 1.9209414604707302) internal successors, (3183), 3046 states have internal predecessors, (3183), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5189 transitions. [2021-11-19 14:55:17,114 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5189 transitions. Word has length 20 [2021-11-19 14:55:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:17,115 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5189 transitions. [2021-11-19 14:55:17,115 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 14:55:17,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5189 transitions. [2021-11-19 14:55:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:55:17,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:17,116 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 14:55:17,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:17,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:17,328 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 14:55:17,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:17,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902509597] [2021-11-19 14:55:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:17,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:17,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:55:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:17,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:55:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:17,531 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 14:55:17,666 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 14:55:17,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:17,824 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 14:55:17,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:17,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902509597] [2021-11-19 14:55:17,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902509597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:17,825 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:17,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:55:17,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658030666] [2021-11-19 14:55:17,825 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:55:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:55:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:55:17,826 INFO L87 Difference]: Start difference. First operand 3052 states and 5189 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 14:55:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:22,954 INFO L93 Difference]: Finished difference Result 5485 states and 9686 transitions. [2021-11-19 14:55:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:55:22,957 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 14:55:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:22,980 INFO L225 Difference]: With dead ends: 5485 [2021-11-19 14:55:22,980 INFO L226 Difference]: Without dead ends: 5485 [2021-11-19 14:55:22,981 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 14:55:22,981 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 3447 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:22,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 6507 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:55:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-11-19 14:55:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3048. [2021-11-19 14:55:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1657 states have (on average 1.916113458056729) internal successors, (3175), 3042 states have internal predecessors, (3175), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5181 transitions. [2021-11-19 14:55:23,509 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5181 transitions. Word has length 34 [2021-11-19 14:55:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:23,510 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 5181 transitions. [2021-11-19 14:55:23,510 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 14:55:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5181 transitions. [2021-11-19 14:55:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:55:23,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:23,512 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 14:55:23,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:23,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:23,724 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 14:55:23,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:23,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815310082] [2021-11-19 14:55:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:23,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:23,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:23,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:55:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:23,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:55:23,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:23,879 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 14:55:24,189 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 14:55:24,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:24,790 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 14:55:24,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:24,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815310082] [2021-11-19 14:55:24,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815310082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:24,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:24,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:55:24,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218910419] [2021-11-19 14:55:24,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:24,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:55:24,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:55:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:55:24,793 INFO L87 Difference]: Start difference. First operand 3048 states and 5181 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 14:55:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:39,061 INFO L93 Difference]: Finished difference Result 5539 states and 9703 transitions. [2021-11-19 14:55:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:55:39,062 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 14:55:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:39,081 INFO L225 Difference]: With dead ends: 5539 [2021-11-19 14:55:39,081 INFO L226 Difference]: Without dead ends: 5539 [2021-11-19 14:55:39,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:55:39,082 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 4551 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:39,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 12551 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2021-11-19 14:55:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-11-19 14:55:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3044. [2021-11-19 14:55:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1657 states have (on average 1.911285455642728) internal successors, (3167), 3038 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5173 transitions. [2021-11-19 14:55:39,797 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5173 transitions. Word has length 34 [2021-11-19 14:55:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:39,797 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5173 transitions. [2021-11-19 14:55:39,797 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 14:55:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5173 transitions. [2021-11-19 14:55:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 14:55:39,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:39,799 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 14:55:39,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:40,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:40,011 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 14:55:40,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:40,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852316384] [2021-11-19 14:55:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:40,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:40,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:40,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:55:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:40,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:55:40,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:40,347 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 14:55:40,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:40,479 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 14:55:40,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:40,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852316384] [2021-11-19 14:55:40,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852316384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:40,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:40,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:55:40,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838758306] [2021-11-19 14:55:40,480 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:40,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:55:40,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:55:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:55:40,482 INFO L87 Difference]: Start difference. First operand 3044 states and 5173 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 14:55:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:55:40,571 INFO L93 Difference]: Finished difference Result 3032 states and 5153 transitions. [2021-11-19 14:55:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:55:40,572 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 14:55:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:55:40,585 INFO L225 Difference]: With dead ends: 3032 [2021-11-19 14:55:40,585 INFO L226 Difference]: Without dead ends: 3032 [2021-11-19 14:55:40,585 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 14:55:40,586 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 1882 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:55:40,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6320 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:55:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-19 14:55:41,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3032. [2021-11-19 14:55:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1645 states have (on average 1.9130699088145897) internal successors, (3147), 3026 states have internal predecessors, (3147), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:55:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5153 transitions. [2021-11-19 14:55:41,053 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 5153 transitions. Word has length 52 [2021-11-19 14:55:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:55:41,054 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 5153 transitions. [2021-11-19 14:55:41,054 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 14:55:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 5153 transitions. [2021-11-19 14:55:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:55:41,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:55:41,058 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 14:55:41,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:55:41,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:55:41,287 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:55:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:55:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 14:55:41,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:55:41,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572156078] [2021-11-19 14:55:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:55:41,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:55:41,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:55:41,290 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:55:41,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:55:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:55:41,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:55:41,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:41,757 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 14:55:41,766 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 14:55:42,547 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:55:42,547 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 25 treesize of output 27 [2021-11-19 14:55:42,569 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:55:42,570 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 24 treesize of output 20 [2021-11-19 14:55:42,621 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 14:55:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:48,095 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 14:55:48,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:55:48,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572156078] [2021-11-19 14:55:48,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572156078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:55:48,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:55:48,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:55:48,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907917657] [2021-11-19 14:55:48,096 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:55:48,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:55:48,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:55:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:55:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:55:48,098 INFO L87 Difference]: Start difference. First operand 3032 states and 5153 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 14:56:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:02,663 INFO L93 Difference]: Finished difference Result 5433 states and 9586 transitions. [2021-11-19 14:56:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:56:02,664 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 14:56:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:02,687 INFO L225 Difference]: With dead ends: 5433 [2021-11-19 14:56:02,688 INFO L226 Difference]: Without dead ends: 5433 [2021-11-19 14:56:02,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 14:56:02,689 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 3042 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2272 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:02,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9689 Invalid, 6015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 3688 Invalid, 0 Unknown, 2272 Unchecked, 14.3s Time] [2021-11-19 14:56:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-19 14:56:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3010. [2021-11-19 14:56:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 1655 states have (on average 1.8930513595166163) internal successors, (3133), 3004 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:56:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5139 transitions. [2021-11-19 14:56:03,449 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5139 transitions. Word has length 60 [2021-11-19 14:56:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:03,450 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5139 transitions. [2021-11-19 14:56:03,450 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 14:56:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5139 transitions. [2021-11-19 14:56:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:56:03,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:03,451 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 14:56:03,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:03,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:03,665 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 14:56:03,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:03,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796702042] [2021-11-19 14:56:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:03,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:03,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:03,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:56:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:03,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:56:03,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:04,226 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 14:56:04,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:04,315 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 14:56:04,787 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 14:56:04,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:04,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796702042] [2021-11-19 14:56:04,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796702042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:56:04,787 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:56:04,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:56:04,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554045411] [2021-11-19 14:56:04,788 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:56:04,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:56:04,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:56:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:56:04,789 INFO L87 Difference]: Start difference. First operand 3010 states and 5139 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 14:56:10,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:10,968 INFO L93 Difference]: Finished difference Result 3008 states and 5137 transitions. [2021-11-19 14:56:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:56:10,969 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 14:56:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:10,980 INFO L225 Difference]: With dead ends: 3008 [2021-11-19 14:56:10,981 INFO L226 Difference]: Without dead ends: 3008 [2021-11-19 14:56:10,981 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 14:56:10,982 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4833 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:10,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 4125 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 14:56:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-19 14:56:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-11-19 14:56:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1655 states have (on average 1.8918429003021149) internal successors, (3131), 3002 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:56:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 5137 transitions. [2021-11-19 14:56:11,340 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 5137 transitions. Word has length 62 [2021-11-19 14:56:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:11,342 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 5137 transitions. [2021-11-19 14:56:11,342 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 14:56:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 5137 transitions. [2021-11-19 14:56:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:56:11,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:11,345 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 14:56:11,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:11,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:11,561 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:11,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 14:56:11,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:11,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978881617] [2021-11-19 14:56:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:11,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:11,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:11,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:56:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:56:11,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:11,974 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 14:56:11,991 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 14:56:12,042 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 14:56:12,060 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 14:56:12,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:12,209 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 14:56:12,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:12,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978881617] [2021-11-19 14:56:12,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978881617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:56:12,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:56:12,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:56:12,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842358337] [2021-11-19 14:56:12,210 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:56:12,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:56:12,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:56:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:56:12,211 INFO L87 Difference]: Start difference. First operand 3008 states and 5137 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 14:56:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:15,461 INFO L93 Difference]: Finished difference Result 3007 states and 5136 transitions. [2021-11-19 14:56:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:56:15,462 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 14:56:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:15,466 INFO L225 Difference]: With dead ends: 3007 [2021-11-19 14:56:15,466 INFO L226 Difference]: Without dead ends: 3007 [2021-11-19 14:56:15,467 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 14:56:15,467 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:15,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10234 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:56:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-19 14:56:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2021-11-19 14:56:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1655 states have (on average 1.891238670694864) internal successors, (3130), 3001 states have internal predecessors, (3130), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:56:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 5136 transitions. [2021-11-19 14:56:15,665 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 5136 transitions. Word has length 65 [2021-11-19 14:56:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:15,665 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 5136 transitions. [2021-11-19 14:56:15,665 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 14:56:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 5136 transitions. [2021-11-19 14:56:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:56:15,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:15,666 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 14:56:15,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:15,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:15,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 14:56:15,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:15,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715598336] [2021-11-19 14:56:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:15,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:15,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:15,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:15,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:56:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:16,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:56:16,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:16,223 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 14:56:16,249 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 14:56:16,259 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 14:56:16,321 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 14:56:16,326 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 14:56:16,352 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 14:56:16,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:16,680 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 14:56:16,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:16,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715598336] [2021-11-19 14:56:16,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715598336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:56:16,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:56:16,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:56:16,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98260772] [2021-11-19 14:56:16,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:56:16,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:56:16,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:56:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:56:16,682 INFO L87 Difference]: Start difference. First operand 3007 states and 5136 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 14:56:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:24,514 INFO L93 Difference]: Finished difference Result 3006 states and 5135 transitions. [2021-11-19 14:56:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:56:24,515 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 14:56:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:24,524 INFO L225 Difference]: With dead ends: 3006 [2021-11-19 14:56:24,524 INFO L226 Difference]: Without dead ends: 3006 [2021-11-19 14:56:24,524 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 14:56:24,525 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 3 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:24,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12724 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-19 14:56:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-19 14:56:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3006. [2021-11-19 14:56:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 1654 states have (on average 1.8917775090689237) internal successors, (3129), 3000 states have internal predecessors, (3129), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-19 14:56:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5135 transitions. [2021-11-19 14:56:24,879 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5135 transitions. Word has length 65 [2021-11-19 14:56:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:24,880 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 5135 transitions. [2021-11-19 14:56:24,880 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 14:56:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5135 transitions. [2021-11-19 14:56:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:56:24,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:24,881 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 14:56:24,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:25,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:25,095 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-11-19 14:56:25,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:25,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254202858] [2021-11-19 14:56:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:25,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:25,098 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:25,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:56:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:25,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:56:25,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:25,479 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 14:56:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:25,655 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 14:56:25,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:25,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254202858] [2021-11-19 14:56:25,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254202858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:56:25,656 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:56:25,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:56:25,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216723136] [2021-11-19 14:56:25,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:56:25,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:56:25,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:56:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:56:25,657 INFO L87 Difference]: Start difference. First operand 3006 states and 5135 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 14:56:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:25,816 INFO L93 Difference]: Finished difference Result 3016 states and 5148 transitions. [2021-11-19 14:56:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:56:25,818 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 14:56:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:25,871 INFO L225 Difference]: With dead ends: 3016 [2021-11-19 14:56:25,871 INFO L226 Difference]: Without dead ends: 3016 [2021-11-19 14:56:25,871 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 14:56:25,873 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 9 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8601 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 14:56:25,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8601 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:56:25,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-11-19 14:56:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-11-19 14:56:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1662 states have (on average 1.8898916967509025) internal successors, (3141), 3009 states have internal predecessors, (3141), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 14:56:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5148 transitions. [2021-11-19 14:56:26,249 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5148 transitions. Word has length 73 [2021-11-19 14:56:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5148 transitions. [2021-11-19 14:56:26,250 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 14:56:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5148 transitions. [2021-11-19 14:56:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:56:26,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:26,254 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 14:56:26,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:26,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:56:26,467 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash 142057039, now seen corresponding path program 1 times [2021-11-19 14:56:26,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:26,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726880747] [2021-11-19 14:56:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:26,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:26,469 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:26,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:56:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:26,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:56:26,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:26,868 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 14:56:26,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:27,110 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 14:56:27,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:27,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726880747] [2021-11-19 14:56:27,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726880747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:27,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1845300484] [2021-11-19 14:56:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:27,111 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:56:27,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:56:27,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:56:27,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 14:56:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:56:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:27,558 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 14:56:27,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:27,764 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 14:56:27,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1845300484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:27,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296968549] [2021-11-19 14:56:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:56:27,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:56:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:56:27,767 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:56:27,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 14:56:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:56:27,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:56:27,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:28,203 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 14:56:28,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:28,516 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 14:56:28,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296968549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:28,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:56:28,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:56:28,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649524625] [2021-11-19 14:56:28,517 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:56:28,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:56:28,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:56:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:56:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:56:28,520 INFO L87 Difference]: Start difference. First operand 3016 states and 5148 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 14:56:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:56:29,258 INFO L93 Difference]: Finished difference Result 3030 states and 5165 transitions. [2021-11-19 14:56:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:56:29,259 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 14:56:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:56:29,284 INFO L225 Difference]: With dead ends: 3030 [2021-11-19 14:56:29,285 INFO L226 Difference]: Without dead ends: 3024 [2021-11-19 14:56:29,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:56:29,292 INFO L933 BasicCegarLoop]: 2870 mSDtfsCounter, 39 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:56:29,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17198 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:56:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-11-19 14:56:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2021-11-19 14:56:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1668 states have (on average 1.8872901678657075) internal successors, (3148), 3015 states have internal predecessors, (3148), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 14:56:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5155 transitions. [2021-11-19 14:56:29,653 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5155 transitions. Word has length 75 [2021-11-19 14:56:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:56:29,653 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5155 transitions. [2021-11-19 14:56:29,654 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 14:56:29,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5155 transitions. [2021-11-19 14:56:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:56:29,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:56:29,659 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 14:56:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:29,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-19 14:56:30,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:56:30,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:56:30,273 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 14:56:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:56:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2028559503, now seen corresponding path program 2 times [2021-11-19 14:56:30,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:56:30,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693307435] [2021-11-19 14:56:30,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:56:30,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:56:30,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:56:30,278 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:56:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:56:30,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:56:30,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:56:30,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:56:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:30,889 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 14:56:30,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:31,423 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 14:56:31,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:56:31,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693307435] [2021-11-19 14:56:31,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693307435] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:31,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123519720] [2021-11-19 14:56:31,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:56:31,424 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:56:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:56:31,425 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:56:31,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 14:56:32,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:56:32,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:56:32,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:56:32,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:56:32,358 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 14:56:32,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:56:32,595 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 14:56:32,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123519720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:56:32,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366021479] [2021-11-19 14:56:32,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:56:32,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:56:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:56:32,597 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:56:32,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 14:57:06,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:06,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:06,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 14:57:06,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:06,841 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 14:57:07,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:57:07,142 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 13 treesize of output 13 [2021-11-19 14:57:07,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 14:57:07,284 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 14:57:07,294 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 14:57:07,534 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 14:57:07,539 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 14:59:32,042 WARN L227 SmtUtils]: Spent 31.97s 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 14:59:32,043 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:59:32,043 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 14:59:44,847 WARN L227 SmtUtils]: Spent 12.79s 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 14:59:44,847 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 14:59:44,847 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 14:59:56,278 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:59:56,279 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 14:59:56,306 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:59:56,307 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 15:00:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:00:06,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:16,644 WARN L227 SmtUtils]: Spent 9.05s 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 15:00:40,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |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) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-19 15:01:55,127 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse5 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse6 .cse7) .cse8 .cse7) .cse9 .cse7) .cse10 .cse7) .cse11 .cse7) .cse12 .cse7))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse6 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse14 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse15) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse15) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse15))) |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) .cse14) (bvadd .cse14 (_ bv20 32)))))))) is different from true [2021-11-19 15:02:01,118 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse6 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse6) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse6)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse7 .cse8) .cse9 .cse8) .cse10 .cse8) .cse11 .cse8) .cse12 .cse8) .cse13 .cse8))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse14) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse7 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse14)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse15 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse16) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse16) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse16) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse16) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse16) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse16))) |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) .cse15) (bvadd .cse15 (_ bv20 32)))))))) is different from true [2021-11-19 15:02:07,283 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |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) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from false [2021-11-19 15:02:09,296 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |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) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-19 15:03:30,363 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse0 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|)) (.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9)) (.cse3 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr237| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr237|) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse9) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr237_109| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_104|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_105|) .cse19) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr237_103|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr237_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19))) |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) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from true [2021-11-19 15:04:13,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 15:04:13,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 15:04:13,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 15:04:13,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254043643] [2021-11-19 15:04:13,130 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 15:04:13,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 15:04:13,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 15:04:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1071, Unknown=109, NotChecked=370, Total=1722 [2021-11-19 15:04:13,132 INFO L87 Difference]: Start difference. First operand 3022 states and 5155 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 15:05:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:05,252 INFO L93 Difference]: Finished difference Result 3048 states and 5191 transitions. [2021-11-19 15:05:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 15:05:05,253 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 15:05:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:05,266 INFO L225 Difference]: With dead ends: 3048 [2021-11-19 15:05:05,267 INFO L226 Difference]: Without dead ends: 3044 [2021-11-19 15:05:05,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 367.0s TimeCoverageRelationStatistics Valid=513, Invalid=2466, Unknown=121, NotChecked=560, Total=3660 [2021-11-19 15:05:05,270 INFO L933 BasicCegarLoop]: 2874 mSDtfsCounter, 63 mSDsluCounter, 20094 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22968 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:05,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 22968 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 15:05:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-11-19 15:05:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3034. [2021-11-19 15:05:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1680 states have (on average 1.8833333333333333) internal successors, (3164), 3027 states have internal predecessors, (3164), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-19 15:05:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5171 transitions. [2021-11-19 15:05:05,562 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5171 transitions. Word has length 79 [2021-11-19 15:05:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:05,563 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5171 transitions. [2021-11-19 15:05:05,563 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 15:05:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5171 transitions. [2021-11-19 15:05:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 15:05:05,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:05,564 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 15:05:05,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-19 15:05:05,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:05,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:06,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 15:05:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 214006031, now seen corresponding path program 3 times [2021-11-19 15:05:06,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:06,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232565885] [2021-11-19 15:05:06,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:05:06,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:06,191 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:06,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 15:05:06,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:05:06,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:06,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:05:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:09,941 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 15:05:09,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:17,325 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 15:05:17,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:17,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232565885] [2021-11-19 15:05:17,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232565885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:17,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1975988393] [2021-11-19 15:05:17,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:05:17,326 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:17,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:17,327 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:17,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 15:05:19,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:05:19,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:19,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:05:19,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:19,958 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 15:05:19,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:21,503 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 15:05:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1975988393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:21,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567894459] [2021-11-19 15:05:21,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:05:21,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:05:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:05:21,505 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:05:21,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2026b9e5-6ed7-4ac7-b173-745446ec5f47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process