./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/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_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/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_be367044-7448-45f7-a46a-5b7bf2e32a2d/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 f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:24,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:24,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:24,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:24,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:24,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:24,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:24,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:24,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:24,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:24,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:24,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:24,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:24,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:24,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:25,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:25,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:25,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:25,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:25,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:25,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:25,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:25,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:25,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:25,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:25,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:25,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:25,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:25,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:25,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:25,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:25,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:25,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:25,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:25,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:25,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:25,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:25,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:25,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:25,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:25,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:25,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:46:25,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:25,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:25,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:25,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:25,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:25,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:25,109 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:25,109 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:46:25,109 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:25,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:25,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:46:25,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:46:25,111 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:25,112 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:46:25,112 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:46:25,112 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:46:25,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:46:25,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:46:25,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:25,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:46:25,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:46:25,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:46:25,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:46:25,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:25,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:46:25,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:46:25,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:46:25,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:25,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:25,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:46:25,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:25,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:25,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:25,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:25,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:25,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:25,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:46:25,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:46:25,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:25,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:25,119 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 [2021-11-19 14:46:25,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:25,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:25,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:25,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:25,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:25,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-19 14:46:25,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/f06eeb82b/b56e1ef58f5e4a89b290e20f777342f1/FLAG367503d46 [2021-11-19 14:46:26,202 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:26,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-19 14:46:26,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/f06eeb82b/b56e1ef58f5e4a89b290e20f777342f1/FLAG367503d46 [2021-11-19 14:46:26,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/f06eeb82b/b56e1ef58f5e4a89b290e20f777342f1 [2021-11-19 14:46:26,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:26,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:26,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:26,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:26,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:26,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:26" (1/1) ... [2021-11-19 14:46:26,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cdace0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:26, skipping insertion in model container [2021-11-19 14:46:26,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:26" (1/1) ... [2021-11-19 14:46:26,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:26,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:26,995 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-19 14:46:27,292 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-19 14:46:27,300 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:27,312 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 14:46:27,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f128c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27, skipping insertion in model container [2021-11-19 14:46:27,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:27,313 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:46:27,316 INFO L158 Benchmark]: Toolchain (without parser) took 987.04ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 65.0MB in the end (delta: 3.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:46:27,317 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:46:27,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 980.41ms. Allocated memory is still 113.2MB. Free memory was 67.7MB in the beginning and 65.0MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:46:27,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 980.41ms. Allocated memory is still 113.2MB. Free memory was 67.7MB in the beginning and 65.0MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/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_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/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_be367044-7448-45f7-a46a-5b7bf2e32a2d/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 f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:29,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:29,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:29,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:29,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:29,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:29,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:29,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:29,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:29,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:29,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:29,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:29,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:29,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:29,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:29,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:29,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:29,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:29,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:29,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:29,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:29,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:29,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:29,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:29,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:29,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:29,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:29,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:29,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:29,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:29,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:29,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:29,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:29,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:29,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:29,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:29,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:29,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:29,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:29,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:29,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:29,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:46:29,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:29,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:29,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:29,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:29,840 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:29,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:29,840 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:29,841 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:29,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:29,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:29,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:46:29,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:46:29,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:29,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:46:29,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:46:29,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:46:29,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:46:29,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:46:29,845 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:29,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:29,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:46:29,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:29,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:29,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:29,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:29,846 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:46:29,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:29,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:29,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:29,847 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 [2021-11-19 14:46:30,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:30,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:30,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:30,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:30,256 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:30,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-19 14:46:30,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/6019184b9/524af52e551e451a8286a8c735dbeb62/FLAG849a9d7c4 [2021-11-19 14:46:31,162 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:31,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2021-11-19 14:46:31,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/6019184b9/524af52e551e451a8286a8c735dbeb62/FLAG849a9d7c4 [2021-11-19 14:46:31,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/data/6019184b9/524af52e551e451a8286a8c735dbeb62 [2021-11-19 14:46:31,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:31,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:31,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:31,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:31,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:31,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:31" (1/1) ... [2021-11-19 14:46:31,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff0d410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:31, skipping insertion in model container [2021-11-19 14:46:31,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:31" (1/1) ... [2021-11-19 14:46:31,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:31,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:31,996 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-19 14:46:32,376 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-19 14:46:32,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:32,407 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:46:32,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:32,464 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-19 14:46:32,620 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-19 14:46:32,622 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:32,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:46:32,672 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[33021,33034] [2021-11-19 14:46:32,779 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_be367044-7448-45f7-a46a-5b7bf2e32a2d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i[84583,84596] [2021-11-19 14:46:32,781 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:32,822 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:46:32,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32 WrapperNode [2021-11-19 14:46:32,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:32,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:32,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:46:32,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:46:32,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:32,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:32,968 INFO L137 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2870 [2021-11-19 14:46:32,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:32,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:46:32,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:46:32,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:46:32,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:32,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:46:33,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:46:33,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:46:33,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:46:33,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:33,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:33,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:46:33,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:46:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:46:33,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:46:33,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:46:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:46:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:46:33,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:46:33,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:46:33,423 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:46:33,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:46:33,429 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:46:39,521 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:46:39,571 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:46:39,571 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 14:46:39,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:39 BoogieIcfgContainer [2021-11-19 14:46:39,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:46:39,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:46:39,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:46:39,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:46:39,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:46:31" (1/3) ... [2021-11-19 14:46:39,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dc2ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:39, skipping insertion in model container [2021-11-19 14:46:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32" (2/3) ... [2021-11-19 14:46:39,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dc2ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:39, skipping insertion in model container [2021-11-19 14:46:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:39" (3/3) ... [2021-11-19 14:46:39,593 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-1.i [2021-11-19 14:46:39,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:46:39,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-19 14:46:39,664 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:46:39,673 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 14:46:39,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-19 14:46:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 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 14:46:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:46:39,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:39,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:46:39,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:46:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 14:46:39,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:39,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414209550] [2021-11-19 14:46:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:39,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:39,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:39,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:46:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:39,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:39,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:40,024 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 14:46:40,051 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 14:46:40,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:40,087 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 14:46:40,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:40,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414209550] [2021-11-19 14:46:40,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414209550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:40,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:46:40,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086483771] [2021-11-19 14:46:40,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:40,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:40,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:40,144 INFO L87 Difference]: Start difference. First operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 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 14:46:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:42,920 INFO L93 Difference]: Finished difference Result 1859 states and 2905 transitions. [2021-11-19 14:46:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:42,923 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 14:46:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:42,974 INFO L225 Difference]: With dead ends: 1859 [2021-11-19 14:46:42,974 INFO L226 Difference]: Without dead ends: 1857 [2021-11-19 14:46:42,976 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 14:46:42,982 INFO L933 BasicCegarLoop]: 2515 mSDtfsCounter, 1794 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:42,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2297 Valid, 2562 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:46:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2021-11-19 14:46:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1856. [2021-11-19 14:46:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 938 states have (on average 2.0223880597014925) internal successors, (1897), 1850 states have internal predecessors, (1897), 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 14:46:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2903 transitions. [2021-11-19 14:46:43,591 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2903 transitions. Word has length 3 [2021-11-19 14:46:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:43,592 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2903 transitions. [2021-11-19 14:46:43,592 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 14:46:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2903 transitions. [2021-11-19 14:46:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:46:43,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:43,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:46:43,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:43,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:43,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:46:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 14:46:43,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:43,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384362843] [2021-11-19 14:46:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:43,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:43,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:43,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:43,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:46:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:43,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:46:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:43,929 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 14:46:43,941 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 14:46:43,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:43,987 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 14:46:43,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:43,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384362843] [2021-11-19 14:46:43,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384362843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:43,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:43,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:46:43,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642784337] [2021-11-19 14:46:43,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:43,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:43,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:43,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:43,991 INFO L87 Difference]: Start difference. First operand 1856 states and 2903 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 14:46:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:52,879 INFO L93 Difference]: Finished difference Result 3140 states and 5211 transitions. [2021-11-19 14:46:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:52,880 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 14:46:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:52,907 INFO L225 Difference]: With dead ends: 3140 [2021-11-19 14:46:52,908 INFO L226 Difference]: Without dead ends: 3140 [2021-11-19 14:46:52,908 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 14:46:52,910 INFO L933 BasicCegarLoop]: 3162 mSDtfsCounter, 2747 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3747 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:52,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3747 Valid, 4847 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-19 14:46:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-11-19 14:46:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1891. [2021-11-19 14:46:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 982 states have (on average 2.0122199592668024) internal successors, (1976), 1885 states have internal predecessors, (1976), 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 14:46:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2982 transitions. [2021-11-19 14:46:53,260 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2982 transitions. Word has length 3 [2021-11-19 14:46:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:53,261 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 2982 transitions. [2021-11-19 14:46:53,261 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 14:46:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2982 transitions. [2021-11-19 14:46:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:46:53,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:53,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:53,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:46:53,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:53,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:46:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 14:46:53,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:53,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186860491] [2021-11-19 14:46:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:53,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:53,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:53,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:53,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:46:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:46:53,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:53,616 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 14:46:53,640 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 14:46:53,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:53,666 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 14:46:53,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:53,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186860491] [2021-11-19 14:46:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186860491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:53,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:53,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:46:53,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554658529] [2021-11-19 14:46:53,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:53,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:46:53,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:46:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:46:53,672 INFO L87 Difference]: Start difference. First operand 1891 states and 2982 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 14:46:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:56,112 INFO L93 Difference]: Finished difference Result 3058 states and 5166 transitions. [2021-11-19 14:46:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:56,114 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 14:46:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:56,137 INFO L225 Difference]: With dead ends: 3058 [2021-11-19 14:46:56,138 INFO L226 Difference]: Without dead ends: 3058 [2021-11-19 14:46:56,138 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 14:46:56,139 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 1806 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 6814 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:56,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 6814 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:46:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-11-19 14:46:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1844. [2021-11-19 14:46:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 982 states have (on average 1.9613034623217922) internal successors, (1926), 1838 states have internal predecessors, (1926), 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 14:46:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2932 transitions. [2021-11-19 14:46:56,455 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2932 transitions. Word has length 8 [2021-11-19 14:46:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:56,456 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2932 transitions. [2021-11-19 14:46:56,456 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 14:46:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2932 transitions. [2021-11-19 14:46:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:46:56,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:56,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:56,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:46:56,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:56,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:46:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 14:46:56,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:56,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693721942] [2021-11-19 14:46:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:56,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:56,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:56,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:46:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:46:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:56,822 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 14:46:56,861 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 14:46:56,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:56,962 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 14:46:56,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:56,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693721942] [2021-11-19 14:46:56,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693721942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:56,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:56,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:46:56,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887952906] [2021-11-19 14:46:56,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:56,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:56,966 INFO L87 Difference]: Start difference. First operand 1844 states and 2932 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 14:47:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:02,971 INFO L93 Difference]: Finished difference Result 3090 states and 5161 transitions. [2021-11-19 14:47:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:02,972 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 14:47:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:02,997 INFO L225 Difference]: With dead ends: 3090 [2021-11-19 14:47:02,997 INFO L226 Difference]: Without dead ends: 3090 [2021-11-19 14:47:02,997 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 14:47:02,998 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 1534 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 9443 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:02,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 9443 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 14:47:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-19 14:47:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 1834. [2021-11-19 14:47:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9480651731160896) internal successors, (1913), 1828 states have internal predecessors, (1913), 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 14:47:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2919 transitions. [2021-11-19 14:47:03,359 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2919 transitions. Word has length 8 [2021-11-19 14:47:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:03,359 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2919 transitions. [2021-11-19 14:47:03,362 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 14:47:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2919 transitions. [2021-11-19 14:47:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:47:03,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:03,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:03,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:03,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:03,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2106406943, now seen corresponding path program 1 times [2021-11-19 14:47:03,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:03,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474872558] [2021-11-19 14:47:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:03,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:03,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:47:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:03,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:03,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:03,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:03,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:47:03,805 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 14:47:03,806 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 14:47:03,865 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:47:03,865 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 14:47:03,888 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 14:47:03,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:03,945 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 14:47:03,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:03,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474872558] [2021-11-19 14:47:03,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474872558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:03,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:03,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:47:03,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363753485] [2021-11-19 14:47:03,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:03,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:47:03,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:47:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:47:03,947 INFO L87 Difference]: Start difference. First operand 1834 states and 2919 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 14:47:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:08,531 INFO L93 Difference]: Finished difference Result 3041 states and 5145 transitions. [2021-11-19 14:47:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10 [2021-11-19 14:47:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:08,554 INFO L225 Difference]: With dead ends: 3041 [2021-11-19 14:47:08,554 INFO L226 Difference]: Without dead ends: 3041 [2021-11-19 14:47:08,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 14:47:08,555 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 1227 mSDsluCounter, 10960 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:08,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 14252 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 14:47:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-19 14:47:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1834. [2021-11-19 14:47:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9470468431771895) internal successors, (1912), 1828 states have internal predecessors, (1912), 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 14:47:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2918 transitions. [2021-11-19 14:47:08,851 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2918 transitions. Word has length 10 [2021-11-19 14:47:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:08,851 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2918 transitions. [2021-11-19 14:47:08,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 14:47:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2918 transitions. [2021-11-19 14:47:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:47:08,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:08,852 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 14:47:08,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:47:09,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:09,067 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 14:47:09,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:09,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292642276] [2021-11-19 14:47:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:09,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:09,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:09,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:09,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:47:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:09,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:47:09,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:09,245 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 14:47:09,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:09,289 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 14:47:09,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:09,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292642276] [2021-11-19 14:47:09,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292642276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:09,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:09,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:47:09,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960623604] [2021-11-19 14:47:09,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:09,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:09,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:09,292 INFO L87 Difference]: Start difference. First operand 1834 states and 2918 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 14:47:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:10,254 INFO L93 Difference]: Finished difference Result 1801 states and 2884 transitions. [2021-11-19 14:47:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:47:10,255 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 14:47:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:10,268 INFO L225 Difference]: With dead ends: 1801 [2021-11-19 14:47:10,268 INFO L226 Difference]: Without dead ends: 1801 [2021-11-19 14:47:10,268 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 14:47:10,269 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 3536 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4039 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:10,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4039 Valid, 3316 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:47:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-11-19 14:47:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1792. [2021-11-19 14:47:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 964 states have (on average 1.9387966804979253) internal successors, (1869), 1786 states have internal predecessors, (1869), 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 14:47:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2875 transitions. [2021-11-19 14:47:10,454 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2875 transitions. Word has length 18 [2021-11-19 14:47:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:10,454 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2875 transitions. [2021-11-19 14:47:10,454 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 14:47:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2875 transitions. [2021-11-19 14:47:10,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 14:47:10,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:10,455 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 14:47:10,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 14:47:10,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:10,670 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 14:47:10,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:10,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238197352] [2021-11-19 14:47:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:10,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:10,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:10,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:47:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:10,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:10,863 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 14:47:10,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:10,899 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 14:47:10,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:10,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238197352] [2021-11-19 14:47:10,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238197352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:10,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:10,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:47:10,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669691403] [2021-11-19 14:47:10,900 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:10,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:10,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:10,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:47:10,902 INFO L87 Difference]: Start difference. First operand 1792 states and 2875 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 14:47:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:11,881 INFO L93 Difference]: Finished difference Result 1780 states and 2856 transitions. [2021-11-19 14:47:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:11,882 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 14:47:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:11,894 INFO L225 Difference]: With dead ends: 1780 [2021-11-19 14:47:11,894 INFO L226 Difference]: Without dead ends: 1780 [2021-11-19 14:47:11,894 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 14:47:11,895 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 3468 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 6008 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:11,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 6008 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:47:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-11-19 14:47:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1770. [2021-11-19 14:47:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 956 states have (on average 1.9246861924686192) internal successors, (1840), 1764 states have internal predecessors, (1840), 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 14:47:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2846 transitions. [2021-11-19 14:47:12,095 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2846 transitions. Word has length 20 [2021-11-19 14:47:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:12,096 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2846 transitions. [2021-11-19 14:47:12,096 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 14:47:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2846 transitions. [2021-11-19 14:47:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:47:12,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:12,097 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 14:47:12,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:12,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:12,309 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 14:47:12,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:12,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789969485] [2021-11-19 14:47:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:12,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:12,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:12,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:12,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:47:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:12,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:12,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:12,446 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 14:47:12,554 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 14:47:12,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:12,681 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 14:47:12,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:12,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789969485] [2021-11-19 14:47:12,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789969485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:12,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:12,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:12,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434786563] [2021-11-19 14:47:12,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:12,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:12,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:12,683 INFO L87 Difference]: Start difference. First operand 1770 states and 2846 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 14:47:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:16,409 INFO L93 Difference]: Finished difference Result 2992 states and 5088 transitions. [2021-11-19 14:47:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:16,410 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 14:47:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:16,431 INFO L225 Difference]: With dead ends: 2992 [2021-11-19 14:47:16,431 INFO L226 Difference]: Without dead ends: 2992 [2021-11-19 14:47:16,432 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 14:47:16,432 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 3342 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:16,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3342 Valid, 6231 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:47:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-19 14:47:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1766. [2021-11-19 14:47:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 956 states have (on average 1.9205020920502092) internal successors, (1836), 1760 states have internal predecessors, (1836), 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 14:47:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2842 transitions. [2021-11-19 14:47:16,715 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2842 transitions. Word has length 34 [2021-11-19 14:47:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:16,715 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 2842 transitions. [2021-11-19 14:47:16,715 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 14:47:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2842 transitions. [2021-11-19 14:47:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:47:16,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:16,717 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 14:47:16,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:16,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:16,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 14:47:16,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:16,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526574853] [2021-11-19 14:47:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:16,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:16,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:16,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:47:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:17,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:47:17,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:17,061 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 14:47:17,342 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 14:47:17,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:17,728 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 14:47:17,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:17,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526574853] [2021-11-19 14:47:17,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526574853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:17,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:17,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:47:17,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587888306] [2021-11-19 14:47:17,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:17,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:47:17,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:47:17,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:47:17,731 INFO L87 Difference]: Start difference. First operand 1766 states and 2842 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 14:47:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:27,329 INFO L93 Difference]: Finished difference Result 3030 states and 5092 transitions. [2021-11-19 14:47:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:27,331 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 14:47:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:27,346 INFO L225 Difference]: With dead ends: 3030 [2021-11-19 14:47:27,347 INFO L226 Difference]: Without dead ends: 3030 [2021-11-19 14:47:27,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:47:27,348 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 5662 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 2011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 6693 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:27,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 6693 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2011 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-19 14:47:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-11-19 14:47:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1762. [2021-11-19 14:47:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 956 states have (on average 1.9163179916317992) internal successors, (1832), 1756 states have internal predecessors, (1832), 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 14:47:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2838 transitions. [2021-11-19 14:47:27,629 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2838 transitions. Word has length 34 [2021-11-19 14:47:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 2838 transitions. [2021-11-19 14:47:27,629 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 14:47:27,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2838 transitions. [2021-11-19 14:47:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 14:47:27,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:27,631 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] [2021-11-19 14:47:27,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:27,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:27,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-19 14:47:27,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:27,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178164005] [2021-11-19 14:47:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:27,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:27,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:27,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:47:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:27,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:27,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:28,091 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 14:47:28,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:28,194 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 14:47:28,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:28,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178164005] [2021-11-19 14:47:28,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178164005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:28,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:28,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:47:28,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369065557] [2021-11-19 14:47:28,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:28,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:28,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:28,196 INFO L87 Difference]: Start difference. First operand 1762 states and 2838 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 14:47:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:28,263 INFO L93 Difference]: Finished difference Result 1765 states and 2837 transitions. [2021-11-19 14:47:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:28,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2021-11-19 14:47:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:28,271 INFO L225 Difference]: With dead ends: 1765 [2021-11-19 14:47:28,272 INFO L226 Difference]: Without dead ends: 1765 [2021-11-19 14:47:28,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 14:47:28,297 INFO L933 BasicCegarLoop]: 2738 mSDtfsCounter, 1715 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:28,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 5986 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:47:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-19 14:47:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1756. [2021-11-19 14:47:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 950 states have (on average 1.9178947368421053) internal successors, (1822), 1750 states have internal predecessors, (1822), 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 14:47:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2828 transitions. [2021-11-19 14:47:28,436 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2828 transitions. Word has length 49 [2021-11-19 14:47:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:28,436 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2828 transitions. [2021-11-19 14:47:28,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 14:47:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2828 transitions. [2021-11-19 14:47:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 14:47:28,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:28,439 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] [2021-11-19 14:47:28,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:28,652 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-19 14:47:28,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:28,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573792142] [2021-11-19 14:47:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:28,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:28,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:28,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:47:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:28,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:28,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:29,203 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 14:47:29,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:29,600 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 14:47:29,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:29,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573792142] [2021-11-19 14:47:29,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573792142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:29,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:29,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:47:29,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118982968] [2021-11-19 14:47:29,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:29,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:47:29,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:47:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:47:29,602 INFO L87 Difference]: Start difference. First operand 1756 states and 2828 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:47:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:29,760 INFO L93 Difference]: Finished difference Result 2946 states and 5030 transitions. [2021-11-19 14:47:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:47:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-19 14:47:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:29,771 INFO L225 Difference]: With dead ends: 2946 [2021-11-19 14:47:29,772 INFO L226 Difference]: Without dead ends: 2946 [2021-11-19 14:47:29,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 14:47:29,773 INFO L933 BasicCegarLoop]: 3375 mSDtfsCounter, 1219 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:29,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6002 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:47:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2021-11-19 14:47:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2891. [2021-11-19 14:47:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 1585 states have (on average 1.905993690851735) internal successors, (3021), 2885 states have internal predecessors, (3021), 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 14:47:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 5027 transitions. [2021-11-19 14:47:30,087 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 5027 transitions. Word has length 57 [2021-11-19 14:47:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:30,087 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 5027 transitions. [2021-11-19 14:47:30,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:47:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 5027 transitions. [2021-11-19 14:47:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:47:30,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:30,089 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 14:47:30,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:30,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:30,302 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 14:47:30,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:30,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618038200] [2021-11-19 14:47:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:30,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:30,305 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:30,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:47:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:30,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:47:30,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:30,640 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 14:47:30,649 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 14:47:31,325 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:47:31,325 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 28 treesize of output 30 [2021-11-19 14:47:31,340 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:47:31,340 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 27 treesize of output 23 [2021-11-19 14:47:31,379 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 14:47:31,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:36,355 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 14:47:36,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:36,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618038200] [2021-11-19 14:47:36,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618038200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:36,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:36,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:47:36,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88948493] [2021-11-19 14:47:36,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:36,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:47:36,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:47:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:47:36,358 INFO L87 Difference]: Start difference. First operand 2891 states and 5027 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 14:47:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:49,020 INFO L93 Difference]: Finished difference Result 5351 states and 9545 transitions. [2021-11-19 14:47:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:49,021 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 14:47:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:49,039 INFO L225 Difference]: With dead ends: 5351 [2021-11-19 14:47:49,039 INFO L226 Difference]: Without dead ends: 5351 [2021-11-19 14:47:49,040 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 14:47:49,041 INFO L933 BasicCegarLoop]: 4544 mSDtfsCounter, 3130 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 9455 SdHoareTripleChecker+Invalid, 8235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4600 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:49,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4134 Valid, 9455 Invalid, 8235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3594 Invalid, 0 Unknown, 4600 Unchecked, 12.4s Time] [2021-11-19 14:47:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-11-19 14:47:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 2869. [2021-11-19 14:47:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 1595 states have (on average 1.8852664576802507) internal successors, (3007), 2863 states have internal predecessors, (3007), 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 14:47:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5013 transitions. [2021-11-19 14:47:49,629 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5013 transitions. Word has length 60 [2021-11-19 14:47:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:49,629 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5013 transitions. [2021-11-19 14:47:49,630 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 14:47:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5013 transitions. [2021-11-19 14:47:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:47:49,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:49,631 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 14:47:49,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:49,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:49,847 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 14:47:49,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:49,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702096127] [2021-11-19 14:47:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:49,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:49,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:49,850 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:49,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:47:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:50,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:47:50,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:50,240 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 14:47:50,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:50,305 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 14:47:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:47:50,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:50,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702096127] [2021-11-19 14:47:50,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702096127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:50,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:50,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:47:50,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622752503] [2021-11-19 14:47:50,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:50,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:47:50,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:50,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:47:50,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:47:50,653 INFO L87 Difference]: Start difference. First operand 2869 states and 5013 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 14:47:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:55,626 INFO L93 Difference]: Finished difference Result 2867 states and 5011 transitions. [2021-11-19 14:47:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:47:55,627 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 14:47:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:55,638 INFO L225 Difference]: With dead ends: 2867 [2021-11-19 14:47:55,639 INFO L226 Difference]: Without dead ends: 2867 [2021-11-19 14:47:55,639 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 14:47:55,640 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 1696 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:55,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 2929 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 14:47:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-11-19 14:47:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2867. [2021-11-19 14:47:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 1595 states have (on average 1.884012539184953) internal successors, (3005), 2861 states have internal predecessors, (3005), 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 14:47:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 5011 transitions. [2021-11-19 14:47:56,053 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 5011 transitions. Word has length 62 [2021-11-19 14:47:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:56,053 INFO L470 AbstractCegarLoop]: Abstraction has 2867 states and 5011 transitions. [2021-11-19 14:47:56,053 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 14:47:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 5011 transitions. [2021-11-19 14:47:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:47:56,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:56,056 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 14:47:56,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:56,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:56,271 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 14:47:56,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:56,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222537249] [2021-11-19 14:47:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:56,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:56,274 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:56,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:47:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:56,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:47:56,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:56,554 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 14:47:56,567 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 14:47:56,600 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 14:47:56,627 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 14:47:56,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:56,746 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 14:47:56,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:56,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222537249] [2021-11-19 14:47:56,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222537249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:56,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:56,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:47:56,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954907679] [2021-11-19 14:47:56,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:56,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:56,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:47:56,748 INFO L87 Difference]: Start difference. First operand 2867 states and 5011 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 14:47:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:59,184 INFO L93 Difference]: Finished difference Result 2866 states and 5010 transitions. [2021-11-19 14:47:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:47:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 14:47:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:59,196 INFO L225 Difference]: With dead ends: 2866 [2021-11-19 14:47:59,196 INFO L226 Difference]: Without dead ends: 2866 [2021-11-19 14:47:59,197 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 14:47:59,198 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 4 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9809 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:59,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9809 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:47:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-11-19 14:47:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2021-11-19 14:47:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 1595 states have (on average 1.883385579937304) internal successors, (3004), 2860 states have internal predecessors, (3004), 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 14:47:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 5010 transitions. [2021-11-19 14:47:59,588 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 5010 transitions. Word has length 65 [2021-11-19 14:47:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:59,588 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 5010 transitions. [2021-11-19 14:47:59,588 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 14:47:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 5010 transitions. [2021-11-19 14:47:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:47:59,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:59,589 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 14:47:59,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:59,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:59,809 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:47:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 14:47:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:59,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429199954] [2021-11-19 14:47:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:59,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:59,812 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:59,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:48:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:00,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:48:00,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:00,153 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 14:48:00,181 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 14:48:00,192 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 14:48:00,249 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 14:48:00,253 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 14:48:00,274 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 14:48:00,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:00,646 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 14:48:00,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:00,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429199954] [2021-11-19 14:48:00,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429199954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:00,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:00,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:48:00,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980192311] [2021-11-19 14:48:00,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:00,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:48:00,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:48:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:48:00,650 INFO L87 Difference]: Start difference. First operand 2866 states and 5010 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 14:48:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:07,251 INFO L93 Difference]: Finished difference Result 2865 states and 5009 transitions. [2021-11-19 14:48:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:48:07,252 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 14:48:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:07,264 INFO L225 Difference]: With dead ends: 2865 [2021-11-19 14:48:07,264 INFO L226 Difference]: Without dead ends: 2865 [2021-11-19 14:48:07,264 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 14:48:07,265 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 3 mSDsluCounter, 9486 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12188 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:07,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12188 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 14:48:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-19 14:48:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2021-11-19 14:48:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 1594 states have (on average 1.8839397741530741) internal successors, (3003), 2859 states have internal predecessors, (3003), 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 14:48:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5009 transitions. [2021-11-19 14:48:07,545 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5009 transitions. Word has length 65 [2021-11-19 14:48:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:07,545 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5009 transitions. [2021-11-19 14:48:07,545 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 14:48:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5009 transitions. [2021-11-19 14:48:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:48:07,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:07,547 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 14:48:07,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:07,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:07,761 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:48:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:07,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2136756111, now seen corresponding path program 1 times [2021-11-19 14:48:07,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:07,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565238869] [2021-11-19 14:48:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:07,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:07,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:07,764 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:07,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:48:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:08,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:48:08,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:08,199 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 14:48:08,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:08,384 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 14:48:08,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:08,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565238869] [2021-11-19 14:48:08,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565238869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:08,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:08,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:48:08,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639554849] [2021-11-19 14:48:08,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:48:08,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:48:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:48:08,386 INFO L87 Difference]: Start difference. First operand 2865 states and 5009 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 14:48:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:08,584 INFO L93 Difference]: Finished difference Result 2875 states and 5022 transitions. [2021-11-19 14:48:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:48:08,585 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 14:48:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:08,614 INFO L225 Difference]: With dead ends: 2875 [2021-11-19 14:48:08,615 INFO L226 Difference]: Without dead ends: 2875 [2021-11-19 14:48:08,615 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 14:48:08,616 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 7 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:08,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13493 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:48:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-11-19 14:48:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2875. [2021-11-19 14:48:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 1602 states have (on average 1.8820224719101124) internal successors, (3015), 2868 states have internal predecessors, (3015), 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 14:48:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5022 transitions. [2021-11-19 14:48:09,028 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5022 transitions. Word has length 73 [2021-11-19 14:48:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:09,028 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 5022 transitions. [2021-11-19 14:48:09,028 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 14:48:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5022 transitions. [2021-11-19 14:48:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:48:09,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:09,030 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 14:48:09,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:09,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:09,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:48:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1952942191, now seen corresponding path program 1 times [2021-11-19 14:48:09,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:09,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456754804] [2021-11-19 14:48:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:09,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:09,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:09,246 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:09,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:48:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:09,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:48:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:09,656 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 14:48:09,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:09,900 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 14:48:09,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:09,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456754804] [2021-11-19 14:48:09,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456754804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:09,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1562891268] [2021-11-19 14:48:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:09,900 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:48:09,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:48:09,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:48:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:10,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:48:10,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:10,304 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 14:48:10,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:10,477 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 14:48:10,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1562891268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:10,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329771285] [2021-11-19 14:48:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:10,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:48:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:48:10,481 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:48:10,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 14:48:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:10,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:48:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:10,875 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 14:48:10,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:11,156 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 14:48:11,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329771285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:11,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:48:11,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:48:11,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838689621] [2021-11-19 14:48:11,157 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:48:11,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:48:11,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:48:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:48:11,159 INFO L87 Difference]: Start difference. First operand 2875 states and 5022 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 14:48:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:48:11,772 INFO L93 Difference]: Finished difference Result 2889 states and 5039 transitions. [2021-11-19 14:48:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:48:11,773 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 14:48:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:48:11,786 INFO L225 Difference]: With dead ends: 2889 [2021-11-19 14:48:11,786 INFO L226 Difference]: Without dead ends: 2883 [2021-11-19 14:48:11,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:48:11,788 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 29 mSDsluCounter, 18883 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21586 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:48:11,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21586 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:48:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-11-19 14:48:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2881. [2021-11-19 14:48:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 1608 states have (on average 1.8793532338308458) internal successors, (3022), 2874 states have internal predecessors, (3022), 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 14:48:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5029 transitions. [2021-11-19 14:48:12,124 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5029 transitions. Word has length 75 [2021-11-19 14:48:12,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:12,124 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5029 transitions. [2021-11-19 14:48:12,124 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 14:48:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5029 transitions. [2021-11-19 14:48:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:48:12,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:12,126 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 14:48:12,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:12,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:12,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:12,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:12,746 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:48:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -326381009, now seen corresponding path program 2 times [2021-11-19 14:48:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339329072] [2021-11-19 14:48:12,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:12,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:12,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:12,748 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:12,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:48:13,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:48:13,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:48:13,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:13,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:13,565 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 14:48:13,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:14,071 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 14:48:14,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:14,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339329072] [2021-11-19 14:48:14,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339329072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:14,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1620469848] [2021-11-19 14:48:14,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:14,072 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:48:14,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:48:14,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:48:14,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 14:48:14,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:48:14,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:48:14,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:14,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:15,026 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 14:48:15,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:15,257 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 14:48:15,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1620469848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:48:15,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60310712] [2021-11-19 14:48:15,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:48:15,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:48:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:48:15,259 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:48:15,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 14:48:41,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:48:41,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:48:41,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 14:48:41,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:41,242 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 14:48:41,507 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:48:41,507 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 14:48:41,514 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 14:48:41,592 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 14:48:41,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 14:48:41,861 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 14:48:41,865 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 14:50:57,829 WARN L227 SmtUtils]: Spent 31.00s 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 14:50:57,830 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:50:57,831 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 14:51:06,953 WARN L227 SmtUtils]: Spent 9.11s 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 14:51:06,953 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 14:51:06,954 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 14:51:18,437 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:51:18,438 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 14:51:18,465 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:51:18,466 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 14:51:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:29,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:42,832 WARN L227 SmtUtils]: Spent 12.33s 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 14:53:01,300 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse1 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$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~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |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 14:53:06,069 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13))))) (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse14 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .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 (_ bv20 32) .cse14))))))) is different from false [2021-11-19 14:53:11,046 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from false [2021-11-19 14:53:17,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$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~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |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 14:53:25,304 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from true [2021-11-19 14:53:33,187 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$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~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |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 14:54:14,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 14:54:14,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:54:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 14:54:14,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322549892] [2021-11-19 14:54:14,836 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 14:54:14,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:54:14,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:54:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:54:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1040, Unknown=77, NotChecked=438, Total=1722 [2021-11-19 14:54:14,839 INFO L87 Difference]: Start difference. First operand 2881 states and 5029 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 14:54:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:54:22,322 INFO L93 Difference]: Finished difference Result 2907 states and 5065 transitions. [2021-11-19 14:54:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:54:22,324 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 14:54:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:54:22,337 INFO L225 Difference]: With dead ends: 2907 [2021-11-19 14:54:22,338 INFO L226 Difference]: Without dead ends: 2903 [2021-11-19 14:54:22,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 234.5s TimeCoverageRelationStatistics Valid=508, Invalid=2409, Unknown=77, NotChecked=666, Total=3660 [2021-11-19 14:54:22,340 INFO L933 BasicCegarLoop]: 2707 mSDtfsCounter, 84 mSDsluCounter, 18925 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21632 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:54:22,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 21632 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:54:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-19 14:54:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2893. [2021-11-19 14:54:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1620 states have (on average 1.8753086419753087) internal successors, (3038), 2886 states have internal predecessors, (3038), 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 14:54:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 5045 transitions. [2021-11-19 14:54:22,711 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 5045 transitions. Word has length 79 [2021-11-19 14:54:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:54:22,712 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 5045 transitions. [2021-11-19 14:54:22,712 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 14:54:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 5045 transitions. [2021-11-19 14:54:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:54:22,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:54:22,714 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 14:54:22,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:22,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:54:23,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-19 14:54:23,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:54:23,328 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-19 14:54:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:54:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1928084049, now seen corresponding path program 3 times [2021-11-19 14:54:23,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:54:23,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525042990] [2021-11-19 14:54:23,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:54:23,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:54:23,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:54:23,332 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:54:23,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:54:24,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 14:54:24,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:54:24,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:54:24,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:24,912 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 14:54:24,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:27,345 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 14:54:27,345 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:27,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525042990] [2021-11-19 14:54:27,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525042990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:54:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1825549169] [2021-11-19 14:54:27,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:54:27,346 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:54:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:54:27,357 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:54:27,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 14:54:29,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 14:54:29,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:54:29,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:54:29,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:30,016 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 14:54:30,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:30,635 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 14:54:30,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1825549169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:54:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614067674] [2021-11-19 14:54:30,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:54:30,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:54:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:54:30,637 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:54:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be367044-7448-45f7-a46a-5b7bf2e32a2d/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process