./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF --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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:24:34,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:24:34,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:24:34,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:24:34,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:24:34,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:24:34,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:24:34,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:24:34,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:24:34,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:24:34,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:24:34,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:24:34,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:24:34,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:24:34,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:24:34,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:24:34,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:24:34,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:24:34,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:24:34,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:24:34,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:24:34,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:24:34,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:24:34,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:24:34,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:24:34,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:24:34,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:24:34,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:24:34,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:24:34,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:24:34,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:24:34,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:24:34,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:24:34,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:24:34,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:24:34,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:24:34,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:24:34,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:24:34,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:24:34,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:24:34,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:24:34,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:24:34,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:24:34,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:24:34,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:24:34,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:24:34,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:24:34,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:24:34,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:24:34,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:24:34,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:24:34,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:24:34,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:24:34,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:24:34,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:24:34,468 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:24:34,468 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:24:34,468 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:24:34,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:24:34,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:24:34,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:24:34,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:24:34,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:24:34,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:24:34,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:24:34,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:24:34,471 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:24:34,471 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:24:34,473 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:24:34,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:24:34,473 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:24:34,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:24:34,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:24:34,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:24:34,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:24:34,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:34,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:24:34,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:24:34,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:24:34,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:24:34,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:24:34,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:24:34,476 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_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2021-11-12 23:24:34,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:24:34,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:24:34,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:24:34,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:24:34,783 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:24:34,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-12 23:24:34,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/7f9fef818/792c38de20ae40fba21b3a5d422273e7/FLAG71fc2be2b [2021-11-12 23:24:35,532 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:24:35,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-12 23:24:35,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/7f9fef818/792c38de20ae40fba21b3a5d422273e7/FLAG71fc2be2b [2021-11-12 23:24:35,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/7f9fef818/792c38de20ae40fba21b3a5d422273e7 [2021-11-12 23:24:35,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:24:35,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:24:35,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:35,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:24:35,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:24:35,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:35" (1/1) ... [2021-11-12 23:24:35,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654d359b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:35, skipping insertion in model container [2021-11-12 23:24:35,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:35" (1/1) ... [2021-11-12 23:24:35,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:24:35,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:36,416 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2021-11-12 23:24:36,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:36,738 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) [2021-11-12 23:24:36,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b7bc7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:36, skipping insertion in model container [2021-11-12 23:24:36,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:36,740 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:24:36,742 INFO L158 Benchmark]: Toolchain (without parser) took 1030.11ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 48.8MB in the beginning and 99.7MB in the end (delta: -50.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-12 23:24:36,742 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 57.4MB in the beginning and 57.3MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:24:36,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1024.88ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 48.7MB in the beginning and 99.7MB in the end (delta: -50.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-12 23:24:36,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 57.4MB in the beginning and 57.3MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1024.88ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 48.7MB in the beginning and 99.7MB in the end (delta: -50.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF --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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:24:38,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:24:38,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:24:39,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:24:39,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:24:39,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:24:39,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:24:39,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:24:39,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:24:39,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:24:39,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:24:39,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:24:39,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:24:39,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:24:39,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:24:39,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:24:39,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:24:39,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:24:39,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:24:39,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:24:39,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:24:39,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:24:39,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:24:39,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:24:39,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:24:39,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:24:39,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:24:39,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:24:39,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:24:39,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:24:39,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:24:39,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:24:39,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:24:39,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:24:39,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:24:39,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:24:39,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:24:39,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:24:39,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:24:39,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:24:39,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:24:39,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:24:39,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:24:39,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:24:39,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:24:39,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:24:39,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:24:39,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:24:39,099 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:24:39,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:24:39,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:24:39,100 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:24:39,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:24:39,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:24:39,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:24:39,102 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:24:39,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:24:39,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:24:39,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:24:39,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:24:39,103 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:24:39,103 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:24:39,103 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:24:39,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:24:39,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:24:39,104 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:24:39,104 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:24:39,104 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:24:39,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:24:39,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:24:39,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:24:39,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:24:39,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:39,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:24:39,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:24:39,106 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:24:39,106 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:39,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:24:39,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:24:39,107 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_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2021-11-12 23:24:39,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:24:39,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:24:39,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:24:39,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:24:39,509 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:24:39,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-12 23:24:39,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/809911346/efcf48027c144dee81eba3ee49ec6e00/FLAGf3bf23e33 [2021-11-12 23:24:40,340 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:24:40,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2021-11-12 23:24:40,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/809911346/efcf48027c144dee81eba3ee49ec6e00/FLAGf3bf23e33 [2021-11-12 23:24:40,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/data/809911346/efcf48027c144dee81eba3ee49ec6e00 [2021-11-12 23:24:40,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:24:40,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:24:40,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:40,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:24:40,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:24:40,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:40" (1/1) ... [2021-11-12 23:24:40,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f08dcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:40, skipping insertion in model container [2021-11-12 23:24:40,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:40" (1/1) ... [2021-11-12 23:24:40,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:24:40,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:41,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2021-11-12 23:24:41,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:41,596 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:24:41,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:41,635 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2021-11-12 23:24:41,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:41,781 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:24:41,810 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i[33022,33035] [2021-11-12 23:24:41,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:41,966 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:24:41,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41 WrapperNode [2021-11-12 23:24:41,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:41,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:24:41,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:24:41,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:24:41,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:24:42,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:24:42,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:24:42,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:24:42,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:24:42,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:24:42,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:24:42,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:24:42,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (1/1) ... [2021-11-12 23:24:42,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:42,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:24:42,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:24:42,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:24:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:24:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-12 23:24:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-12 23:24:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:24:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:24:42,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:24:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:24:42,457 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:24:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:24:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:24:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:24:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:24:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:24:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:24:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:24:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:24:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:24:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:24:42,758 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:24:52,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:24:52,438 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-12 23:24:52,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:52 BoogieIcfgContainer [2021-11-12 23:24:52,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:24:52,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:24:52,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:24:52,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:24:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:24:40" (1/3) ... [2021-11-12 23:24:52,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41183265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:52, skipping insertion in model container [2021-11-12 23:24:52,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:41" (2/3) ... [2021-11-12 23:24:52,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41183265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:52, skipping insertion in model container [2021-11-12 23:24:52,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:52" (3/3) ... [2021-11-12 23:24:52,455 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2021-11-12 23:24:52,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:24:52,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2021-11-12 23:24:52,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:24:52,529 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 [2021-11-12 23:24:52,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2021-11-12 23:24:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-12 23:24:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:24:52,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:52,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:24:52,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:24:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:52,630 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-12 23:24:52,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:52,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110581075] [2021-11-12 23:24:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:52,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:52,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:52,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:52,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:24:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:52,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:52,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:52,931 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 [2021-11-12 23:24:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:52,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:52,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:52,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110581075] [2021-11-12 23:24:52,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110581075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:52,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:52,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:24:52,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767181516] [2021-11-12 23:24:52,967 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:52,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:24:52,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:24:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:53,042 INFO L87 Difference]: Start difference. First operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2021-11-12 23:24:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:57,237 INFO L93 Difference]: Finished difference Result 2558 states and 2724 transitions. [2021-11-12 23:24:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:57,240 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 [2021-11-12 23:24:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:57,281 INFO L225 Difference]: With dead ends: 2558 [2021-11-12 23:24:57,281 INFO L226 Difference]: Without dead ends: 2556 [2021-11-12 23:24:57,283 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 [2021-11-12 23:24:57,289 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1951 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3359.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.19ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4014.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:57,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1646 Invalid, 1298 Unknown, 0 Unchecked, 33.19ms Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 4014.46ms Time] [2021-11-12 23:24:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-12 23:24:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2202. [2021-11-12 23:24:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1224 states have (on average 2.037581699346405) internal successors, (2494), 2186 states have internal predecessors, (2494), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:24:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2526 transitions. [2021-11-12 23:24:57,459 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2526 transitions. Word has length 3 [2021-11-12 23:24:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:57,460 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 2526 transitions. [2021-11-12 23:24:57,460 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) [2021-11-12 23:24:57,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2526 transitions. [2021-11-12 23:24:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:24:57,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:57,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:24:57,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:24:57,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:57,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:24:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-12 23:24:57,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:57,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402059056] [2021-11-12 23:24:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:57,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:57,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:57,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:57,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:24:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:57,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:57,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:57,873 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 [2021-11-12 23:24:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:57,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:57,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:57,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402059056] [2021-11-12 23:24:57,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402059056] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:57,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:57,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:24:57,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644210990] [2021-11-12 23:24:57,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:57,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:57,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:57,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:57,953 INFO L87 Difference]: Start difference. First operand 2202 states and 2526 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) [2021-11-12 23:25:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:07,469 INFO L93 Difference]: Finished difference Result 3303 states and 3727 transitions. [2021-11-12 23:25:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:07,470 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 [2021-11-12 23:25:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:07,488 INFO L225 Difference]: With dead ends: 3303 [2021-11-12 23:25:07,488 INFO L226 Difference]: Without dead ends: 3303 [2021-11-12 23:25:07,489 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 [2021-11-12 23:25:07,491 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 2250 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8161.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.98ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9362.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:07,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 3292 Invalid, 2144 Unknown, 0 Unchecked, 28.98ms Time], IncrementalHoareTripleChecker [23 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 9362.22ms Time] [2021-11-12 23:25:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-12 23:25:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2366. [2021-11-12 23:25:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 1400 states have (on average 2.025714285714286) internal successors, (2836), 2350 states have internal predecessors, (2836), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2868 transitions. [2021-11-12 23:25:07,564 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2868 transitions. Word has length 3 [2021-11-12 23:25:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:07,564 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 2868 transitions. [2021-11-12 23:25:07,565 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) [2021-11-12 23:25:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2868 transitions. [2021-11-12 23:25:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:25:07,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:07,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:07,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:07,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-12 23:25:07,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:07,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672600232] [2021-11-12 23:25:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:07,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:07,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:07,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:07,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:25:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:07,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:07,957 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 [2021-11-12 23:25:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:07,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:07,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:07,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672600232] [2021-11-12 23:25:07,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672600232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:07,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:07,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:25:07,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308717282] [2021-11-12 23:25:07,994 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:07,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:25:07,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:25:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:25:07,996 INFO L87 Difference]: Start difference. First operand 2366 states and 2868 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) [2021-11-12 23:25:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:11,773 INFO L93 Difference]: Finished difference Result 3104 states and 3606 transitions. [2021-11-12 23:25:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:11,773 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 [2021-11-12 23:25:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:11,789 INFO L225 Difference]: With dead ends: 3104 [2021-11-12 23:25:11,790 INFO L226 Difference]: Without dead ends: 3104 [2021-11-12 23:25:11,790 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 [2021-11-12 23:25:11,791 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1987 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3121.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.94ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3690.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:11,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2597 Invalid, 1475 Unknown, 0 Unchecked, 17.94ms Time], IncrementalHoareTripleChecker [102 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 3690.74ms Time] [2021-11-12 23:25:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-12 23:25:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2275. [2021-11-12 23:25:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1400 states have (on average 1.9364285714285714) internal successors, (2711), 2259 states have internal predecessors, (2711), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2743 transitions. [2021-11-12 23:25:11,856 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2743 transitions. Word has length 8 [2021-11-12 23:25:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:11,856 INFO L470 AbstractCegarLoop]: Abstraction has 2275 states and 2743 transitions. [2021-11-12 23:25:11,857 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) [2021-11-12 23:25:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2743 transitions. [2021-11-12 23:25:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:25:11,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:11,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:11,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:12,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-12 23:25:12,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:12,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670018819] [2021-11-12 23:25:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:12,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:12,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:12,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:12,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:25:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:12,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:12,269 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 [2021-11-12 23:25:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:12,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:12,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:12,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670018819] [2021-11-12 23:25:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670018819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:12,392 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:12,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:25:12,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023917924] [2021-11-12 23:25:12,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:12,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:12,394 INFO L87 Difference]: Start difference. First operand 2275 states and 2743 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) [2021-11-12 23:25:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:21,414 INFO L93 Difference]: Finished difference Result 3232 states and 3635 transitions. [2021-11-12 23:25:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:21,415 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 [2021-11-12 23:25:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:21,429 INFO L225 Difference]: With dead ends: 3232 [2021-11-12 23:25:21,430 INFO L226 Difference]: Without dead ends: 3232 [2021-11-12 23:25:21,430 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 [2021-11-12 23:25:21,431 INFO L933 BasicCegarLoop]: 2282 mSDtfsCounter, 1443 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7901.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.99ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8923.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:21,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 4240 Invalid, 2403 Unknown, 0 Unchecked, 22.99ms Time], IncrementalHoareTripleChecker [27 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 8923.56ms Time] [2021-11-12 23:25:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2021-11-12 23:25:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2267. [2021-11-12 23:25:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1402 states have (on average 1.9194008559201141) internal successors, (2691), 2251 states have internal predecessors, (2691), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 2723 transitions. [2021-11-12 23:25:21,493 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 2723 transitions. Word has length 8 [2021-11-12 23:25:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:21,494 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 2723 transitions. [2021-11-12 23:25:21,494 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) [2021-11-12 23:25:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 2723 transitions. [2021-11-12 23:25:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:25:21,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:21,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:21,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:21,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:21,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-12 23:25:21,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:21,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968573418] [2021-11-12 23:25:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:21,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:21,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:21,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:25:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:21,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:21,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:21,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:21,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:21,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968573418] [2021-11-12 23:25:21,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968573418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:21,974 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:21,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:25:21,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430289925] [2021-11-12 23:25:21,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:21,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:21,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:21,976 INFO L87 Difference]: Start difference. First operand 2267 states and 2723 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-12 23:25:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:22,037 INFO L93 Difference]: Finished difference Result 2225 states and 2680 transitions. [2021-11-12 23:25:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-12 23:25:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:22,051 INFO L225 Difference]: With dead ends: 2225 [2021-11-12 23:25:22,051 INFO L226 Difference]: Without dead ends: 2225 [2021-11-12 23:25:22,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:22,052 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1592 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:22,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 3210 Invalid, 17 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 27.65ms Time] [2021-11-12 23:25:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-11-12 23:25:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2021-11-12 23:25:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1384 states have (on average 1.9132947976878614) internal successors, (2648), 2209 states have internal predecessors, (2648), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2680 transitions. [2021-11-12 23:25:22,103 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2680 transitions. Word has length 11 [2021-11-12 23:25:22,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:22,103 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 2680 transitions. [2021-11-12 23:25:22,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-12 23:25:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2680 transitions. [2021-11-12 23:25:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:25:22,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:22,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:22,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:22,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:22,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-12 23:25:22,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:22,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235539752] [2021-11-12 23:25:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:22,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:22,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:22,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:22,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:25:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:22,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:22,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:22,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:22,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235539752] [2021-11-12 23:25:22,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235539752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:22,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:22,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:25:22,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138232863] [2021-11-12 23:25:22,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:22,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:25:22,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:25:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:22,575 INFO L87 Difference]: Start difference. First operand 2225 states and 2680 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-12 23:25:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:22,688 INFO L93 Difference]: Finished difference Result 2204 states and 2652 transitions. [2021-11-12 23:25:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:25:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:22,701 INFO L225 Difference]: With dead ends: 2204 [2021-11-12 23:25:22,701 INFO L226 Difference]: Without dead ends: 2204 [2021-11-12 23:25:22,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:22,705 INFO L933 BasicCegarLoop]: 1955 mSDtfsCounter, 1524 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:22,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 5113 Invalid, 80 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 60.11ms Time] [2021-11-12 23:25:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-11-12 23:25:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2203. [2021-11-12 23:25:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1376 states have (on average 1.903343023255814) internal successors, (2619), 2187 states have internal predecessors, (2619), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2651 transitions. [2021-11-12 23:25:22,766 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2651 transitions. Word has length 13 [2021-11-12 23:25:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 2651 transitions. [2021-11-12 23:25:22,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-12 23:25:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2651 transitions. [2021-11-12 23:25:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:25:22,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:22,768 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] [2021-11-12 23:25:22,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:22,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:22,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-12 23:25:22,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:22,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012014633] [2021-11-12 23:25:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:22,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:22,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:23,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:25:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:23,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:23,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:23,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:23,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012014633] [2021-11-12 23:25:23,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012014633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:23,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:23,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:25:23,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22707257] [2021-11-12 23:25:23,256 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:23,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:23,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:23,258 INFO L87 Difference]: Start difference. First operand 2203 states and 2651 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-12 23:25:23,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:23,328 INFO L93 Difference]: Finished difference Result 3480 states and 4065 transitions. [2021-11-12 23:25:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:23,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 [2021-11-12 23:25:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:23,346 INFO L225 Difference]: With dead ends: 3480 [2021-11-12 23:25:23,346 INFO L226 Difference]: Without dead ends: 3480 [2021-11-12 23:25:23,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:23,347 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 3762 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:23,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 4475 Invalid, 23 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 35.81ms Time] [2021-11-12 23:25:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-12 23:25:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2161. [2021-11-12 23:25:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1358 states have (on average 1.8969072164948453) internal successors, (2576), 2145 states have internal predecessors, (2576), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2608 transitions. [2021-11-12 23:25:23,433 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2608 transitions. Word has length 20 [2021-11-12 23:25:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:23,434 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2608 transitions. [2021-11-12 23:25:23,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-12 23:25:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2608 transitions. [2021-11-12 23:25:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:25:23,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:23,436 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] [2021-11-12 23:25:23,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:23,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:23,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-12 23:25:23,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:23,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150986691] [2021-11-12 23:25:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:23,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:23,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:23,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:25:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:25:23,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:23,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:23,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:23,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150986691] [2021-11-12 23:25:23,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150986691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:23,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:23,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:25:23,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196567517] [2021-11-12 23:25:23,890 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:23,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:23,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:23,892 INFO L87 Difference]: Start difference. First operand 2161 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-12 23:25:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:23,965 INFO L93 Difference]: Finished difference Result 3353 states and 3884 transitions. [2021-11-12 23:25:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:25:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 [2021-11-12 23:25:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:23,984 INFO L225 Difference]: With dead ends: 3353 [2021-11-12 23:25:23,984 INFO L226 Difference]: Without dead ends: 3353 [2021-11-12 23:25:23,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:23,986 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 3676 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:23,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 4333 Invalid, 23 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 36.08ms Time] [2021-11-12 23:25:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2021-11-12 23:25:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2083. [2021-11-12 23:25:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 1304 states have (on average 1.8765337423312884) internal successors, (2447), 2067 states have internal predecessors, (2447), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2479 transitions. [2021-11-12 23:25:24,038 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2479 transitions. Word has length 20 [2021-11-12 23:25:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:24,039 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2479 transitions. [2021-11-12 23:25:24,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-12 23:25:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2479 transitions. [2021-11-12 23:25:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:25:24,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:24,041 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] [2021-11-12 23:25:24,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:24,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-12 23:25:24,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:24,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150474893] [2021-11-12 23:25:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:24,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:24,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:24,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:25:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:24,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:24,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:24,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:24,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:24,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150474893] [2021-11-12 23:25:24,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150474893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:24,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:24,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:25:24,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658478658] [2021-11-12 23:25:24,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:24,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:25:24,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:25:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:24,528 INFO L87 Difference]: Start difference. First operand 2083 states and 2479 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-12 23:25:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:24,637 INFO L93 Difference]: Finished difference Result 3339 states and 3865 transitions. [2021-11-12 23:25:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-12 23:25:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:24,652 INFO L225 Difference]: With dead ends: 3339 [2021-11-12 23:25:24,652 INFO L226 Difference]: Without dead ends: 3339 [2021-11-12 23:25:24,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:24,653 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 3608 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 7676 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.33ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:24,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 7676 Invalid, 86 Unknown, 0 Unchecked, 7.33ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 72.43ms Time] [2021-11-12 23:25:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-12 23:25:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2061. [2021-11-12 23:25:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1296 states have (on average 1.8657407407407407) internal successors, (2418), 2045 states have internal predecessors, (2418), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2450 transitions. [2021-11-12 23:25:24,701 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2450 transitions. Word has length 22 [2021-11-12 23:25:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:24,719 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 2450 transitions. [2021-11-12 23:25:24,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-12 23:25:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2450 transitions. [2021-11-12 23:25:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:25:24,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:24,721 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] [2021-11-12 23:25:24,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:24,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,948 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-12 23:25:24,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:24,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510187524] [2021-11-12 23:25:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:24,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:24,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:24,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:25:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:25,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:25,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:25,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:25,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510187524] [2021-11-12 23:25:25,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510187524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:25,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:25,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:25:25,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944540225] [2021-11-12 23:25:25,284 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:25,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:25:25,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:25:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:25,287 INFO L87 Difference]: Start difference. First operand 2061 states and 2450 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-12 23:25:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:25,435 INFO L93 Difference]: Finished difference Result 3274 states and 3742 transitions. [2021-11-12 23:25:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-12 23:25:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:25,463 INFO L225 Difference]: With dead ends: 3274 [2021-11-12 23:25:25,463 INFO L226 Difference]: Without dead ends: 3274 [2021-11-12 23:25:25,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:25,464 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3538 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.74ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:25,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 7480 Invalid, 86 Unknown, 0 Unchecked, 11.74ms Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 86.61ms Time] [2021-11-12 23:25:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-11-12 23:25:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2023. [2021-11-12 23:25:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1272 states have (on average 1.8325471698113207) internal successors, (2331), 2007 states have internal predecessors, (2331), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2363 transitions. [2021-11-12 23:25:25,514 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2363 transitions. Word has length 22 [2021-11-12 23:25:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:25,515 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2363 transitions. [2021-11-12 23:25:25,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-12 23:25:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2363 transitions. [2021-11-12 23:25:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:25:25,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:25,518 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] [2021-11-12 23:25:25,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:25,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:25,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-12 23:25:25,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:25,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900337742] [2021-11-12 23:25:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:25,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:25,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:25,732 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:25,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:25:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:25,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:25,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:25,935 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 [2021-11-12 23:25:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:26,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:26,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:26,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900337742] [2021-11-12 23:25:26,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900337742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:26,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:26,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:25:26,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775768524] [2021-11-12 23:25:26,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:26,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:26,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:26,185 INFO L87 Difference]: Start difference. First operand 2023 states and 2363 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-12 23:25:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:29,776 INFO L93 Difference]: Finished difference Result 2298 states and 2540 transitions. [2021-11-12 23:25:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:29,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 23:25:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:29,784 INFO L225 Difference]: With dead ends: 2298 [2021-11-12 23:25:29,784 INFO L226 Difference]: Without dead ends: 2298 [2021-11-12 23:25:29,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:29,785 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 2347 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2943.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3523.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:29,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 2015 Invalid, 1502 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [21 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 3523.50ms Time] [2021-11-12 23:25:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-11-12 23:25:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2019. [2021-11-12 23:25:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1272 states have (on average 1.8294025157232705) internal successors, (2327), 2003 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2359 transitions. [2021-11-12 23:25:29,827 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2359 transitions. Word has length 27 [2021-11-12 23:25:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:29,827 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 2359 transitions. [2021-11-12 23:25:29,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-12 23:25:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2359 transitions. [2021-11-12 23:25:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:25:29,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:29,829 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] [2021-11-12 23:25:29,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:25:30,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:30,057 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-12 23:25:30,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:30,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208464521] [2021-11-12 23:25:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:30,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:30,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:30,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:25:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:30,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:25:30,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:30,215 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 [2021-11-12 23:25:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:30,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:30,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:30,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208464521] [2021-11-12 23:25:30,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208464521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:30,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:30,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:25:30,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989489904] [2021-11-12 23:25:30,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:30,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:25:30,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:25:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:30,991 INFO L87 Difference]: Start difference. First operand 2019 states and 2359 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-12 23:25:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:42,723 INFO L93 Difference]: Finished difference Result 2817 states and 3132 transitions. [2021-11-12 23:25:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:25:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 23:25:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:42,729 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 23:25:42,729 INFO L226 Difference]: Without dead ends: 2817 [2021-11-12 23:25:42,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:25:42,730 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 4074 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10079.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.09ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11541.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:42,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 3717 Invalid, 2702 Unknown, 0 Unchecked, 24.09ms Time], IncrementalHoareTripleChecker [29 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 11541.99ms Time] [2021-11-12 23:25:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-12 23:25:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2052. [2021-11-12 23:25:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1306 states have (on average 1.8101071975497702) internal successors, (2364), 2036 states have internal predecessors, (2364), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2396 transitions. [2021-11-12 23:25:42,770 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2396 transitions. Word has length 27 [2021-11-12 23:25:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:42,771 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2396 transitions. [2021-11-12 23:25:42,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-12 23:25:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2396 transitions. [2021-11-12 23:25:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:25:42,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:42,772 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] [2021-11-12 23:25:42,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:42,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:42,984 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-12 23:25:42,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:42,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443617440] [2021-11-12 23:25:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:42,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:42,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:42,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:43,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:25:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:43,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:43,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:43,231 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 [2021-11-12 23:25:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:43,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:43,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:43,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443617440] [2021-11-12 23:25:43,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443617440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:43,510 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:43,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:25:43,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677821899] [2021-11-12 23:25:43,510 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:43,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:25:43,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:25:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:25:43,511 INFO L87 Difference]: Start difference. First operand 2052 states and 2396 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:49,432 INFO L93 Difference]: Finished difference Result 3953 states and 4482 transitions. [2021-11-12 23:25:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:25:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-12 23:25:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:49,460 INFO L225 Difference]: With dead ends: 3953 [2021-11-12 23:25:49,460 INFO L226 Difference]: Without dead ends: 3953 [2021-11-12 23:25:49,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:25:49,462 INFO L933 BasicCegarLoop]: 2430 mSDtfsCounter, 3322 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4889.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.54ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5806.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:49,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 4236 Invalid, 2679 Unknown, 0 Unchecked, 24.54ms Time], IncrementalHoareTripleChecker [43 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 5806.77ms Time] [2021-11-12 23:25:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-11-12 23:25:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 2048. [2021-11-12 23:25:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1306 states have (on average 1.8070444104134762) internal successors, (2360), 2032 states have internal predecessors, (2360), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:25:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2392 transitions. [2021-11-12 23:25:49,514 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2392 transitions. Word has length 36 [2021-11-12 23:25:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:49,514 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 2392 transitions. [2021-11-12 23:25:49,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2392 transitions. [2021-11-12 23:25:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:25:49,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:49,516 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] [2021-11-12 23:25:49,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:49,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:49,728 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:25:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:49,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-12 23:25:49,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:49,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453897094] [2021-11-12 23:25:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:49,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:49,731 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:49,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:25:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:49,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:25:49,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:49,998 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 [2021-11-12 23:25:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:50,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:50,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:50,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453897094] [2021-11-12 23:25:50,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453897094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:50,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:50,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:25:50,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337154987] [2021-11-12 23:25:50,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:50,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:25:50,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:25:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:50,852 INFO L87 Difference]: Start difference. First operand 2048 states and 2392 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-12 23:26:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:07,080 INFO L93 Difference]: Finished difference Result 3842 states and 4245 transitions. [2021-11-12 23:26:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:07,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-12 23:26:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:07,089 INFO L225 Difference]: With dead ends: 3842 [2021-11-12 23:26:07,089 INFO L226 Difference]: Without dead ends: 3842 [2021-11-12 23:26:07,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:26:07,090 INFO L933 BasicCegarLoop]: 2279 mSDtfsCounter, 4734 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14157.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.28ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16013.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:07,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 5980 Invalid, 3810 Unknown, 0 Unchecked, 32.28ms Time], IncrementalHoareTripleChecker [32 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 16013.89ms Time] [2021-11-12 23:26:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-11-12 23:26:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2044. [2021-11-12 23:26:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1306 states have (on average 1.8039816232771821) internal successors, (2356), 2028 states have internal predecessors, (2356), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:26:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2388 transitions. [2021-11-12 23:26:07,129 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2388 transitions. Word has length 36 [2021-11-12 23:26:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:07,130 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 2388 transitions. [2021-11-12 23:26:07,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-12 23:26:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2388 transitions. [2021-11-12 23:26:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:26:07,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:07,131 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] [2021-11-12 23:26:07,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:07,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:07,343 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-12 23:26:07,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:07,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046288279] [2021-11-12 23:26:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:07,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:07,345 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:07,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:26:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:07,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:07,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:07,579 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 [2021-11-12 23:26:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:07,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:07,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:07,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046288279] [2021-11-12 23:26:07,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046288279] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:07,817 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:07,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:26:07,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672755510] [2021-11-12 23:26:07,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:07,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:07,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:07,819 INFO L87 Difference]: Start difference. First operand 2044 states and 2388 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:13,523 INFO L93 Difference]: Finished difference Result 4309 states and 4854 transitions. [2021-11-12 23:26:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:26:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-12 23:26:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:13,532 INFO L225 Difference]: With dead ends: 4309 [2021-11-12 23:26:13,532 INFO L226 Difference]: Without dead ends: 4309 [2021-11-12 23:26:13,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:26:13,533 INFO L933 BasicCegarLoop]: 1943 mSDtfsCounter, 4462 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4746.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.14ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5605.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:13,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 3938 Invalid, 2605 Unknown, 0 Unchecked, 19.14ms Time], IncrementalHoareTripleChecker [51 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5605.21ms Time] [2021-11-12 23:26:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2021-11-12 23:26:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 2041. [2021-11-12 23:26:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7955589586523737) internal successors, (2345), 2025 states have internal predecessors, (2345), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:26:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2377 transitions. [2021-11-12 23:26:13,572 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2377 transitions. Word has length 36 [2021-11-12 23:26:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:13,573 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2377 transitions. [2021-11-12 23:26:13,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2377 transitions. [2021-11-12 23:26:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:26:13,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:13,574 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] [2021-11-12 23:26:13,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:13,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:13,787 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-12 23:26:13,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:13,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322314891] [2021-11-12 23:26:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:13,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:13,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:13,789 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:13,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:26:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:14,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:26:14,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:14,028 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 [2021-11-12 23:26:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:14,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:14,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:14,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322314891] [2021-11-12 23:26:14,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322314891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:14,730 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:14,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:26:14,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074637135] [2021-11-12 23:26:14,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:14,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:14,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:14,731 INFO L87 Difference]: Start difference. First operand 2041 states and 2377 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-12 23:26:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:33,258 INFO L93 Difference]: Finished difference Result 4039 states and 4512 transitions. [2021-11-12 23:26:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:26:33,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-12 23:26:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:33,271 INFO L225 Difference]: With dead ends: 4039 [2021-11-12 23:26:33,271 INFO L226 Difference]: Without dead ends: 4039 [2021-11-12 23:26:33,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:26:33,273 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 3276 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16324.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 7545 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.23ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18327.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:33,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3281 Valid, 7545 Invalid, 5137 Unknown, 0 Unchecked, 32.23ms Time], IncrementalHoareTripleChecker [25 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 18327.31ms Time] [2021-11-12 23:26:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2021-11-12 23:26:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 2041. [2021-11-12 23:26:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1306 states have (on average 1.7924961715160797) internal successors, (2341), 2025 states have internal predecessors, (2341), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:26:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2373 transitions. [2021-11-12 23:26:33,317 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2373 transitions. Word has length 36 [2021-11-12 23:26:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:33,318 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2373 transitions. [2021-11-12 23:26:33,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-12 23:26:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2373 transitions. [2021-11-12 23:26:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-12 23:26:33,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:33,319 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] [2021-11-12 23:26:33,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:33,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:33,533 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-12 23:26:33,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:33,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371133069] [2021-11-12 23:26:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:33,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:33,535 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:33,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:26:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:33,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:33,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:33,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:33,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:33,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371133069] [2021-11-12 23:26:33,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371133069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:33,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:33,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:26:33,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181913150] [2021-11-12 23:26:33,984 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:33,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:33,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:33,985 INFO L87 Difference]: Start difference. First operand 2041 states and 2373 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-12 23:26:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:34,042 INFO L93 Difference]: Finished difference Result 2035 states and 2359 transitions. [2021-11-12 23:26:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:34,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-12 23:26:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:34,045 INFO L225 Difference]: With dead ends: 2035 [2021-11-12 23:26:34,045 INFO L226 Difference]: Without dead ends: 2035 [2021-11-12 23:26:34,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:26:34,046 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 749 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:34,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 4593 Invalid, 43 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 32.83ms Time] [2021-11-12 23:26:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-12 23:26:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2021-11-12 23:26:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1300 states have (on average 1.79) internal successors, (2327), 2019 states have internal predecessors, (2327), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:26:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2359 transitions. [2021-11-12 23:26:34,075 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2359 transitions. Word has length 40 [2021-11-12 23:26:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:34,076 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 2359 transitions. [2021-11-12 23:26:34,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-12 23:26:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2359 transitions. [2021-11-12 23:26:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-12 23:26:34,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:34,077 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] [2021-11-12 23:26:34,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:34,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:34,289 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:34,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-12 23:26:34,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:34,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751906259] [2021-11-12 23:26:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:34,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:34,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:26:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:34,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:34,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:35,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:35,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751906259] [2021-11-12 23:26:35,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751906259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:35,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:35,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:26:35,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918805628] [2021-11-12 23:26:35,145 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:35,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:26:35,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:35,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:26:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:35,146 INFO L87 Difference]: Start difference. First operand 2035 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-12 23:26:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:35,358 INFO L93 Difference]: Finished difference Result 3181 states and 3621 transitions. [2021-11-12 23:26:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:35,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-12 23:26:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:35,367 INFO L225 Difference]: With dead ends: 3181 [2021-11-12 23:26:35,368 INFO L226 Difference]: Without dead ends: 3181 [2021-11-12 23:26:35,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:35,369 INFO L933 BasicCegarLoop]: 1805 mSDtfsCounter, 1176 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.34ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:35,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3475 Invalid, 66 Unknown, 0 Unchecked, 5.34ms Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 182.22ms Time] [2021-11-12 23:26:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-11-12 23:26:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2636. [2021-11-12 23:26:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1899 states have (on average 1.7693522906793049) internal successors, (3360), 2615 states have internal predecessors, (3360), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:26:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3402 transitions. [2021-11-12 23:26:35,428 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3402 transitions. Word has length 48 [2021-11-12 23:26:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:35,429 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3402 transitions. [2021-11-12 23:26:35,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-12 23:26:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3402 transitions. [2021-11-12 23:26:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 23:26:35,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:35,430 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] [2021-11-12 23:26:35,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:35,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:35,642 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-12 23:26:35,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:35,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552021567] [2021-11-12 23:26:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:35,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:35,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:35,644 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:35,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:26:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:35,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:35,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:36,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:36,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:36,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552021567] [2021-11-12 23:26:36,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552021567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:36,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:36,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:26:36,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135880602] [2021-11-12 23:26:36,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:36,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:36,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:36,120 INFO L87 Difference]: Start difference. First operand 2636 states and 3402 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-12 23:26:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:36,190 INFO L93 Difference]: Finished difference Result 3591 states and 4413 transitions. [2021-11-12 23:26:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-12 23:26:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:36,196 INFO L225 Difference]: With dead ends: 3591 [2021-11-12 23:26:36,196 INFO L226 Difference]: Without dead ends: 3591 [2021-11-12 23:26:36,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:26:36,197 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 1743 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 6358 Invalid, 43 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 38.02ms Time] [2021-11-12 23:26:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-11-12 23:26:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 2612. [2021-11-12 23:26:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 1875 states have (on average 1.7706666666666666) internal successors, (3320), 2591 states have internal predecessors, (3320), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:26:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3362 transitions. [2021-11-12 23:26:36,240 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3362 transitions. Word has length 51 [2021-11-12 23:26:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 3362 transitions. [2021-11-12 23:26:36,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-12 23:26:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3362 transitions. [2021-11-12 23:26:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-12 23:26:36,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:36,242 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] [2021-11-12 23:26:36,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:36,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:36,458 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-12 23:26:36,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:36,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436345170] [2021-11-12 23:26:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:36,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:36,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:36,460 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:36,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:26:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:36,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:36,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:36,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:36,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:36,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436345170] [2021-11-12 23:26:36,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436345170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:36,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:36,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:26:36,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054542433] [2021-11-12 23:26:36,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:36,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:36,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:26:36,898 INFO L87 Difference]: Start difference. First operand 2612 states and 3362 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-12 23:26:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:36,994 INFO L93 Difference]: Finished difference Result 3336 states and 3911 transitions. [2021-11-12 23:26:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2021-11-12 23:26:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:36,999 INFO L225 Difference]: With dead ends: 3336 [2021-11-12 23:26:36,999 INFO L226 Difference]: Without dead ends: 3336 [2021-11-12 23:26:36,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:26:37,001 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 1734 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.77ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:37,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 6934 Invalid, 43 Unknown, 0 Unchecked, 8.77ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 38.41ms Time] [2021-11-12 23:26:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-11-12 23:26:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2600. [2021-11-12 23:26:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1863 states have (on average 1.7713365539452497) internal successors, (3300), 2579 states have internal predecessors, (3300), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:26:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3342 transitions. [2021-11-12 23:26:37,048 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3342 transitions. Word has length 54 [2021-11-12 23:26:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:37,048 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 3342 transitions. [2021-11-12 23:26:37,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-12 23:26:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3342 transitions. [2021-11-12 23:26:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 23:26:37,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:37,050 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] [2021-11-12 23:26:37,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:37,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:37,267 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -495130849, now seen corresponding path program 1 times [2021-11-12 23:26:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:37,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018749608] [2021-11-12 23:26:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:37,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:37,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:37,270 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:37,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:26:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:37,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:37,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:37,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:26:37,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:26:37,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:26:37,611 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:26:37,611 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 [2021-11-12 23:26:37,666 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:26:37,666 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 [2021-11-12 23:26:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:37,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:37,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:37,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018749608] [2021-11-12 23:26:37,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018749608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:37,905 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:37,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:26:37,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689986458] [2021-11-12 23:26:37,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:37,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:37,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:26:37,908 INFO L87 Difference]: Start difference. First operand 2600 states and 3342 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:40,652 INFO L93 Difference]: Finished difference Result 2567 states and 3308 transitions. [2021-11-12 23:26:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:26:40,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-12 23:26:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:40,656 INFO L225 Difference]: With dead ends: 2567 [2021-11-12 23:26:40,657 INFO L226 Difference]: Without dead ends: 2567 [2021-11-12 23:26:40,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:26:40,658 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 755 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2349.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2685.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:40,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 7449 Invalid, 759 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [3 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2685.14ms Time] [2021-11-12 23:26:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-12 23:26:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2566. [2021-11-12 23:26:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 1829 states have (on average 1.7851284855112084) internal successors, (3265), 2545 states have internal predecessors, (3265), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:26:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3307 transitions. [2021-11-12 23:26:40,715 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3307 transitions. Word has length 57 [2021-11-12 23:26:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:40,715 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 3307 transitions. [2021-11-12 23:26:40,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:26:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3307 transitions. [2021-11-12 23:26:40,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 23:26:40,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:40,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:40,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:40,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:40,949 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-12 23:26:40,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:40,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445238265] [2021-11-12 23:26:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:40,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:40,951 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:40,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:26:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:41,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:41,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:41,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:41,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:41,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445238265] [2021-11-12 23:26:41,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445238265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:41,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:26:41,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82903129] [2021-11-12 23:26:41,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:41,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:26:41,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:26:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:41,867 INFO L87 Difference]: Start difference. First operand 2566 states and 3307 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-12 23:26:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:42,012 INFO L93 Difference]: Finished difference Result 3547 states and 4402 transitions. [2021-11-12 23:26:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:26:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-12 23:26:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:42,017 INFO L225 Difference]: With dead ends: 3547 [2021-11-12 23:26:42,018 INFO L226 Difference]: Without dead ends: 3547 [2021-11-12 23:26:42,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:26:42,018 INFO L933 BasicCegarLoop]: 2011 mSDtfsCounter, 866 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:42,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3672 Invalid, 64 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 125.26ms Time] [2021-11-12 23:26:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-11-12 23:26:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3211. [2021-11-12 23:26:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2471 states have (on average 1.7567786321327399) internal successors, (4341), 3184 states have internal predecessors, (4341), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:26:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4395 transitions. [2021-11-12 23:26:42,094 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4395 transitions. Word has length 59 [2021-11-12 23:26:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:42,094 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 4395 transitions. [2021-11-12 23:26:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-12 23:26:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4395 transitions. [2021-11-12 23:26:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:26:42,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:42,095 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] [2021-11-12 23:26:42,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:42,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:42,308 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-12 23:26:42,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:42,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310902649] [2021-11-12 23:26:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:42,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:42,311 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:42,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:26:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:42,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:26:42,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:42,768 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 [2021-11-12 23:26:42,778 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 [2021-11-12 23:26:43,428 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:26:43,429 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 24 treesize of output 26 [2021-11-12 23:26:43,442 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:26:43,442 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 23 treesize of output 19 [2021-11-12 23:26:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:50,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:50,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310902649] [2021-11-12 23:26:50,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310902649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:50,270 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:50,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:26:50,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577461717] [2021-11-12 23:26:50,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:50,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:50,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-12 23:26:50,272 INFO L87 Difference]: Start difference. First operand 3211 states and 4395 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) [2021-11-12 23:26:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:51,772 INFO L93 Difference]: Finished difference Result 3475 states and 4584 transitions. [2021-11-12 23:26:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:26:51,773 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 [2021-11-12 23:26:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:51,780 INFO L225 Difference]: With dead ends: 3475 [2021-11-12 23:26:51,780 INFO L226 Difference]: Without dead ends: 3475 [2021-11-12 23:26:51,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-12 23:26:51,781 INFO L933 BasicCegarLoop]: 1807 mSDtfsCounter, 867 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1253.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2186 IncrementalHoareTripleChecker+Unchecked, 1446.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:51,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 4033 Invalid, 2533 Unknown, 0 Unchecked, 10.62ms Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 2186 Unchecked, 1446.65ms Time] [2021-11-12 23:26:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2021-11-12 23:26:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3210. [2021-11-12 23:26:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 2471 states have (on average 1.7559692432213678) internal successors, (4339), 3183 states have internal predecessors, (4339), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:26:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4393 transitions. [2021-11-12 23:26:51,842 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4393 transitions. Word has length 62 [2021-11-12 23:26:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:51,842 INFO L470 AbstractCegarLoop]: Abstraction has 3210 states and 4393 transitions. [2021-11-12 23:26:51,842 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) [2021-11-12 23:26:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4393 transitions. [2021-11-12 23:26:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:26:51,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:51,844 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] [2021-11-12 23:26:51,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:52,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:52,057 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:26:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-12 23:26:52,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:52,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246605168] [2021-11-12 23:26:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:52,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:52,059 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:52,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:26:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:52,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:26:52,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:52,443 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 [2021-11-12 23:26:52,453 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 [2021-11-12 23:26:53,298 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:26:53,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-12 23:26:53,304 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:26:53,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-12 23:26:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:53,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:55,449 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc171#1.base_11| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv44 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc171#1.base_11| (_ bv44 32)) |c_ULTIMATE.start_main_~user~0#1.base|)) (bvule (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv40 32)) .cse0))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc171#1.base_11|)))))))) is different from false [2021-11-12 23:26:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:57,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:57,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246605168] [2021-11-12 23:26:57,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246605168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:57,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:57,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:26:57,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943629846] [2021-11-12 23:26:57,890 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:57,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:26:57,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:26:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2021-11-12 23:26:57,891 INFO L87 Difference]: Start difference. First operand 3210 states and 4393 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) [2021-11-12 23:27:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:06,247 INFO L93 Difference]: Finished difference Result 4698 states and 6320 transitions. [2021-11-12 23:27:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:27:06,247 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 [2021-11-12 23:27:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:06,254 INFO L225 Difference]: With dead ends: 4698 [2021-11-12 23:27:06,254 INFO L226 Difference]: Without dead ends: 4698 [2021-11-12 23:27:06,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=16, Invalid=17, Unknown=1, NotChecked=8, Total=42 [2021-11-12 23:27:06,255 INFO L933 BasicCegarLoop]: 1285 mSDtfsCounter, 2734 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7029.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.40ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2847 IncrementalHoareTripleChecker+Unchecked, 8213.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:06,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 3058 Invalid, 5281 Unknown, 0 Unchecked, 28.40ms Time], IncrementalHoareTripleChecker [85 Valid, 2349 Invalid, 0 Unknown, 2847 Unchecked, 8213.36ms Time] [2021-11-12 23:27:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2021-11-12 23:27:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 3203. [2021-11-12 23:27:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2524 states have (on average 1.705229793977813) internal successors, (4304), 3176 states have internal predecessors, (4304), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4358 transitions. [2021-11-12 23:27:06,310 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4358 transitions. Word has length 62 [2021-11-12 23:27:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 4358 transitions. [2021-11-12 23:27:06,310 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) [2021-11-12 23:27:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4358 transitions. [2021-11-12 23:27:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 23:27:06,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:06,312 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] [2021-11-12 23:27:06,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:06,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:06,525 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-12 23:27:06,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:06,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947652492] [2021-11-12 23:27:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:06,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:06,528 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:06,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:27:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:06,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:27:06,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:06,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:07,048 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 [2021-11-12 23:27:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:07,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:07,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947652492] [2021-11-12 23:27:07,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947652492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:07,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:07,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:27:07,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930524876] [2021-11-12 23:27:07,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:07,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:27:07,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:07,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:27:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:27:07,346 INFO L87 Difference]: Start difference. First operand 3203 states and 4358 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-12 23:27:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:10,568 INFO L93 Difference]: Finished difference Result 3204 states and 4351 transitions. [2021-11-12 23:27:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:27:10,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-12 23:27:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:10,576 INFO L225 Difference]: With dead ends: 3204 [2021-11-12 23:27:10,576 INFO L226 Difference]: Without dead ends: 3204 [2021-11-12 23:27:10,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:27:10,577 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 4458 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2714.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3173.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:10,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 1316 Invalid, 884 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [42 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 3173.91ms Time] [2021-11-12 23:27:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2021-11-12 23:27:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3200. [2021-11-12 23:27:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2524 states have (on average 1.7024564183835182) internal successors, (4297), 3173 states have internal predecessors, (4297), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4351 transitions. [2021-11-12 23:27:10,620 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4351 transitions. Word has length 64 [2021-11-12 23:27:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:10,621 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 4351 transitions. [2021-11-12 23:27:10,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-12 23:27:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4351 transitions. [2021-11-12 23:27:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:27:10,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:10,622 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] [2021-11-12 23:27:10,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:10,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:10,836 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-12 23:27:10,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:10,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038601896] [2021-11-12 23:27:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:10,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:10,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:10,838 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:10,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-12 23:27:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:11,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:27:11,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:11,226 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 [2021-11-12 23:27:11,238 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 [2021-11-12 23:27:11,270 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 [2021-11-12 23:27:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:11,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:11,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:11,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038601896] [2021-11-12 23:27:11,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038601896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:11,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:11,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:27:11,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156922970] [2021-11-12 23:27:11,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:11,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:27:11,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:27:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:27:11,417 INFO L87 Difference]: Start difference. First operand 3200 states and 4351 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:27:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:16,235 INFO L93 Difference]: Finished difference Result 3199 states and 4349 transitions. [2021-11-12 23:27:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:27:16,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-12 23:27:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:16,239 INFO L225 Difference]: With dead ends: 3199 [2021-11-12 23:27:16,239 INFO L226 Difference]: Without dead ends: 3199 [2021-11-12 23:27:16,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:27:16,240 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 4 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4105.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4738.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:16,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4601 Invalid, 2301 Unknown, 0 Unchecked, 12.14ms Time], IncrementalHoareTripleChecker [1 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 4738.57ms Time] [2021-11-12 23:27:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2021-11-12 23:27:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3199. [2021-11-12 23:27:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2524 states have (on average 1.701664025356577) internal successors, (4295), 3172 states have internal predecessors, (4295), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4349 transitions. [2021-11-12 23:27:16,288 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4349 transitions. Word has length 67 [2021-11-12 23:27:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:16,289 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 4349 transitions. [2021-11-12 23:27:16,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:27:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4349 transitions. [2021-11-12 23:27:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:27:16,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:16,290 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] [2021-11-12 23:27:16,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:16,502 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-12 23:27:16,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:16,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530945523] [2021-11-12 23:27:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:16,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:16,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:16,504 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:16,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:27:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:16,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:27:16,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:16,829 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 [2021-11-12 23:27:16,853 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 [2021-11-12 23:27:16,863 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 [2021-11-12 23:27:16,934 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 [2021-11-12 23:27:16,938 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 [2021-11-12 23:27:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:16,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:17,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:17,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530945523] [2021-11-12 23:27:17,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530945523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:17,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:17,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:27:17,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054080447] [2021-11-12 23:27:17,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:17,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:27:17,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:27:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:27:17,313 INFO L87 Difference]: Start difference. First operand 3199 states and 4349 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-12 23:27:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:32,291 INFO L93 Difference]: Finished difference Result 3198 states and 4347 transitions. [2021-11-12 23:27:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:27:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-12 23:27:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:32,297 INFO L225 Difference]: With dead ends: 3198 [2021-11-12 23:27:32,297 INFO L226 Difference]: Without dead ends: 3198 [2021-11-12 23:27:32,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:27:32,297 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 4 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13455.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14850.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:32,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5522 Invalid, 3103 Unknown, 0 Unchecked, 19.51ms Time], IncrementalHoareTripleChecker [1 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 14850.89ms Time] [2021-11-12 23:27:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-12 23:27:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3198. [2021-11-12 23:27:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2522 states have (on average 1.7022204599524187) internal successors, (4293), 3171 states have internal predecessors, (4293), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4347 transitions. [2021-11-12 23:27:32,334 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4347 transitions. Word has length 67 [2021-11-12 23:27:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:32,335 INFO L470 AbstractCegarLoop]: Abstraction has 3198 states and 4347 transitions. [2021-11-12 23:27:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-12 23:27:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4347 transitions. [2021-11-12 23:27:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:27:32,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:32,336 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] [2021-11-12 23:27:32,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-12 23:27:32,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:32,550 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-12 23:27:32,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:32,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380185632] [2021-11-12 23:27:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:32,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:32,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:32,554 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:32,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-12 23:27:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:32,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:27:32,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:32,995 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 [2021-11-12 23:27:33,013 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 [2021-11-12 23:27:33,056 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 [2021-11-12 23:27:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:33,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:33,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:33,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380185632] [2021-11-12 23:27:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380185632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:33,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:33,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:27:33,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436693534] [2021-11-12 23:27:33,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:33,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:27:33,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:27:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:27:33,198 INFO L87 Difference]: Start difference. First operand 3198 states and 4347 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:27:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:38,702 INFO L93 Difference]: Finished difference Result 3197 states and 4344 transitions. [2021-11-12 23:27:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:27:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-12 23:27:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:38,705 INFO L225 Difference]: With dead ends: 3197 [2021-11-12 23:27:38,705 INFO L226 Difference]: Without dead ends: 3197 [2021-11-12 23:27:38,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:27:38,706 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 4 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4660.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5404.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:38,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4596 Invalid, 2298 Unknown, 0 Unchecked, 15.15ms Time], IncrementalHoareTripleChecker [1 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 5404.90ms Time] [2021-11-12 23:27:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2021-11-12 23:27:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2021-11-12 23:27:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 2522 states have (on average 1.7010309278350515) internal successors, (4290), 3170 states have internal predecessors, (4290), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4344 transitions. [2021-11-12 23:27:38,738 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4344 transitions. Word has length 67 [2021-11-12 23:27:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4344 transitions. [2021-11-12 23:27:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-12 23:27:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4344 transitions. [2021-11-12 23:27:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:27:38,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:38,740 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] [2021-11-12 23:27:38,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-12 23:27:38,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:38,954 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-12 23:27:38,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:38,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579177365] [2021-11-12 23:27:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:38,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:38,957 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:38,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 23:27:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:39,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:27:39,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:39,382 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 [2021-11-12 23:27:39,406 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 [2021-11-12 23:27:39,418 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 [2021-11-12 23:27:39,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 23:27:39,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 23:27:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:39,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:39,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:39,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579177365] [2021-11-12 23:27:39,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579177365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:39,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:39,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:27:39,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518908895] [2021-11-12 23:27:39,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:39,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:27:39,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:27:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:27:39,847 INFO L87 Difference]: Start difference. First operand 3197 states and 4344 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-12 23:27:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:55,657 INFO L93 Difference]: Finished difference Result 3196 states and 4341 transitions. [2021-11-12 23:27:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:27:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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 67 [2021-11-12 23:27:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:55,662 INFO L225 Difference]: With dead ends: 3196 [2021-11-12 23:27:55,662 INFO L226 Difference]: Without dead ends: 3196 [2021-11-12 23:27:55,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:27:55,663 INFO L933 BasicCegarLoop]: 1722 mSDtfsCounter, 3 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13996.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6457 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15651.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:55,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6457 Invalid, 3878 Unknown, 0 Unchecked, 23.71ms Time], IncrementalHoareTripleChecker [1 Valid, 3877 Invalid, 0 Unknown, 0 Unchecked, 15651.92ms Time] [2021-11-12 23:27:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2021-11-12 23:27:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3196. [2021-11-12 23:27:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2519 states have (on average 1.7018658197697498) internal successors, (4287), 3169 states have internal predecessors, (4287), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:27:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4341 transitions. [2021-11-12 23:27:55,693 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4341 transitions. Word has length 67 [2021-11-12 23:27:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:55,694 INFO L470 AbstractCegarLoop]: Abstraction has 3196 states and 4341 transitions. [2021-11-12 23:27:55,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-12 23:27:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4341 transitions. [2021-11-12 23:27:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:27:55,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:55,695 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, 1, 1] [2021-11-12 23:27:55,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-12 23:27:55,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:55,923 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2062362287, now seen corresponding path program 1 times [2021-11-12 23:27:55,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:55,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009185110] [2021-11-12 23:27:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:55,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:55,925 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:55,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-12 23:27:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:56,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:27:56,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:56,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:56,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:56,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009185110] [2021-11-12 23:27:56,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009185110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:56,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:56,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:27:56,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937463052] [2021-11-12 23:27:56,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:56,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:27:56,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:27:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:27:56,544 INFO L87 Difference]: Start difference. First operand 3196 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-12 23:27:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:56,678 INFO L93 Difference]: Finished difference Result 3206 states and 4357 transitions. [2021-11-12 23:27:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:27:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 75 [2021-11-12 23:27:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:56,688 INFO L225 Difference]: With dead ends: 3206 [2021-11-12 23:27:56,688 INFO L226 Difference]: Without dead ends: 3206 [2021-11-12 23:27:56,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:27:56,689 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 7 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6863 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:56,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6863 Invalid, 54 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 93.03ms Time] [2021-11-12 23:27:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-11-12 23:27:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3206. [2021-11-12 23:27:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3206 states, 2527 states have (on average 1.7012267510882468) internal successors, (4299), 3178 states have internal predecessors, (4299), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-12 23:27:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 4357 transitions. [2021-11-12 23:27:56,734 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 4357 transitions. Word has length 75 [2021-11-12 23:27:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:56,735 INFO L470 AbstractCegarLoop]: Abstraction has 3206 states and 4357 transitions. [2021-11-12 23:27:56,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-12 23:27:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 4357 transitions. [2021-11-12 23:27:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:27:56,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:56,736 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, 1, 1] [2021-11-12 23:27:56,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:56,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:56,950 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:27:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -110653553, now seen corresponding path program 1 times [2021-11-12 23:27:56,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:56,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337327078] [2021-11-12 23:27:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:56,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:56,953 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:56,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 23:27:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:57,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:27:57,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:57,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:57,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:57,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337327078] [2021-11-12 23:27:57,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337327078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:57,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119824904] [2021-11-12 23:27:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:57,742 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:57,744 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:57,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-12 23:27:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:58,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:27:58,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:58,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:58,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119824904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:58,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358446500] [2021-11-12 23:27:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:58,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:27:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:27:58,512 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:27:58,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-12 23:27:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:58,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:27:58,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:58,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:59,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358446500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:59,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:27:59,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:27:59,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487108451] [2021-11-12 23:27:59,146 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:27:59,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:27:59,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:59,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:27:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:27:59,147 INFO L87 Difference]: Start difference. First operand 3206 states and 4357 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-12 23:27:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:59,792 INFO L93 Difference]: Finished difference Result 3220 states and 4377 transitions. [2021-11-12 23:27:59,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:27:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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 77 [2021-11-12 23:27:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:59,801 INFO L225 Difference]: With dead ends: 3220 [2021-11-12 23:27:59,801 INFO L226 Difference]: Without dead ends: 3214 [2021-11-12 23:27:59,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:27:59,802 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 38 mSDsluCounter, 10278 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 11998 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.08ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:59,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 11998 Invalid, 184 Unknown, 0 Unchecked, 9.08ms Time], IncrementalHoareTripleChecker [40 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 332.49ms Time] [2021-11-12 23:27:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-11-12 23:27:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3212. [2021-11-12 23:27:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 2533 states have (on average 1.6999605211212) internal successors, (4306), 3184 states have internal predecessors, (4306), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (31), 24 states have call predecessors, (31), 27 states have call successors, (31) [2021-11-12 23:27:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 4364 transitions. [2021-11-12 23:27:59,847 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 4364 transitions. Word has length 77 [2021-11-12 23:27:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:59,848 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 4364 transitions. [2021-11-12 23:27:59,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2021-11-12 23:27:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 4364 transitions. [2021-11-12 23:27:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:27:59,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:59,849 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, 1, 1] [2021-11-12 23:27:59,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:00,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:00,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:00,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:28:00,453 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 986 more)] === [2021-11-12 23:28:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 977680719, now seen corresponding path program 2 times [2021-11-12 23:28:00,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:00,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256719077] [2021-11-12 23:28:00,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:28:00,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:00,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:00,455 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:00,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-12 23:28:00,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:28:00,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:28:00,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:28:00,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:28:01,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:28:01,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:28:01,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256719077] [2021-11-12 23:28:01,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256719077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:28:01,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1651826154] [2021-11-12 23:28:01,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:28:01,553 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:28:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:28:01,554 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:28:01,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-12 23:28:02,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:28:02,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:28:02,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:28:02,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:28:02,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:28:02,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1651826154] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:28:02,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959440610] [2021-11-12 23:28:02,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:28:02,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:28:02,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:28:02,855 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:28:02,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2f67a-dc19-49e4-9476-3bbf07b3d7f3/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-12 23:28:23,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:28:23,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:28:23,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:28:23,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:24,068 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:28:24,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-12 23:28:24,119 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 18 treesize of output 14 [2021-11-12 23:30:01,678 WARN L227 SmtUtils]: Spent 11.37s 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) [2021-11-12 23:30:01,679 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-12 23:30:01,679 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 77 treesize of output 81 [2021-11-12 23:30:02,451 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:30:02,452 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 127 treesize of output 40 [2021-11-12 23:30:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:02,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:04,622 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-12 23:30:04,623 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 66 treesize of output 65 [2021-11-12 23:30:41,223 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32))) |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|))))))) (_ bv1 1))))) is different from false [2021-11-12 23:34:47,496 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-12 23:34:47,497 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 116 treesize of output 115 [2021-11-12 23:34:51,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$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|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |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|))))) is different from false [2021-11-12 23:35:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-12 23:35:10,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959440610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:10,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:35:10,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-12 23:35:10,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198129418] [2021-11-12 23:35:10,951 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:35:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-12 23:35:10,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-12 23:35:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1479, Unknown=172, NotChecked=166, Total=1980 [2021-11-12 23:35:10,954 INFO L87 Difference]: Start difference. First operand 3212 states and 4364 transitions. Second operand has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:35:17,890 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-12 23:36:56,803 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))))))))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-12 23:37:34,306 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_#Ultimate.C_memset_#t~loopctr456_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |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|))))))))))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:37:36,328 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_114| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |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|))))))))))))))) (_ bv1 1))))) (= (_ bv3 32) |c_#Ultimate.C_memset_#t~loopctr456|)) is different from false [2021-11-12 23:37:38,349 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr456_112|) (_ bv0 32))) |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|))))))))))))) (_ bv1 1))))) (= (_ bv4 32) |c_#Ultimate.C_memset_#t~loopctr456|)) is different from false [2021-11-12 23:37:40,368 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_87| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv5 32) |c_#Ultimate.C_memset_#t~loopctr456|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr456| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr456|) (_ bv0 32))) |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|))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:37:42,383 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv6 32) |c_#Ultimate.C_memset_#t~loopctr456|) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_88| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_87| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_88| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |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|))))))) (_ bv1 1)))))) is different from false [2021-11-12 23:37:44,397 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (not (bvult (_ bv6 32) |c_#Ultimate.C_memset_#amount|)) (exists ((|v_#Ultimate.C_memset_#t~loopctr456_88| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_86| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_83| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_84| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_85| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_86| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_87| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_88| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr456_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr456_103| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr456_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |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|))))))) (_ bv1 1)))))) is different from false