./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.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_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/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_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/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_857cac52-3b23-4156-9859-d6e584e2e911/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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:27:23,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:27:23,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:27:24,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:27:24,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:27:24,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:27:24,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:27:24,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:27:24,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:27:24,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:27:24,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:27:24,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:27:24,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:27:24,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:27:24,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:27:24,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:27:24,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:27:24,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:27:24,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:27:24,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:27:24,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:27:24,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:27:24,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:27:24,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:27:24,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:27:24,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:27:24,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:27:24,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:27:24,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:27:24,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:27:24,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:27:24,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:27:24,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:27:24,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:27:24,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:27:24,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:27:24,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:27:24,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:27:24,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:27:24,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:27:24,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:27:24,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-13 02:27:24,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:27:24,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:27:24,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:27:24,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:27:24,167 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:27:24,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:27:24,168 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:27:24,168 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:27:24,168 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:27:24,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:27:24,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:27:24,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:27:24,170 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:27:24,171 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:27:24,171 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:27:24,171 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:27:24,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 02:27:24,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 02:27:24,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:27:24,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:27:24,173 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 02:27:24,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:27:24,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:27:24,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:27:24,174 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 02:27:24,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 02:27:24,176 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 02:27:24,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:27:24,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:27:24,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:27:24,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:27:24,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:27:24,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:27:24,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:27:24,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:27:24,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:27:24,180 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:27:24,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:27:24,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:27:24,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:27:24,181 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_857cac52-3b23-4156-9859-d6e584e2e911/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-13 02:27:24,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:27:24,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:27:24,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:27:24,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:27:24,536 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:27:24,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-13 02:27:24,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/3f9a90fda/1e814182fabb49e5bd7ccbc85e79a4ca/FLAGfdec18115 [2021-11-13 02:27:25,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:27:25,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-13 02:27:25,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/3f9a90fda/1e814182fabb49e5bd7ccbc85e79a4ca/FLAGfdec18115 [2021-11-13 02:27:25,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/3f9a90fda/1e814182fabb49e5bd7ccbc85e79a4ca [2021-11-13 02:27:25,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:27:25,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:27:25,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:25,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:27:25,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:27:25,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:25" (1/1) ... [2021-11-13 02:27:25,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dca7da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:25, skipping insertion in model container [2021-11-13 02:27:25,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:25" (1/1) ... [2021-11-13 02:27:25,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:27:25,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:27:26,145 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-13 02:27:26,285 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-13 02:27:26,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:26,311 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) [2021-11-13 02:27:26,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e14765e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:26, skipping insertion in model container [2021-11-13 02:27:26,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:26,313 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:27:26,315 INFO L158 Benchmark]: Toolchain (without parser) took 807.19ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 65.6MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:27:26,316 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:27:26,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 794.21ms. Allocated memory is still 100.7MB. Free memory was 59.9MB in the beginning and 65.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:27:26,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 794.21ms. Allocated memory is still 100.7MB. Free memory was 59.9MB in the beginning and 65.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/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_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/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_857cac52-3b23-4156-9859-d6e584e2e911/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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:27:28,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:27:28,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:27:28,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:27:28,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:27:28,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:27:28,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:27:29,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:27:29,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:27:29,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:27:29,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:27:29,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:27:29,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:27:29,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:27:29,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:27:29,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:27:29,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:27:29,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:27:29,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:27:29,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:27:29,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:27:29,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:27:29,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:27:29,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:27:29,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:27:29,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:27:29,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:27:29,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:27:29,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:27:29,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:27:29,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:27:29,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:27:29,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:27:29,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:27:29,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:27:29,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:27:29,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:27:29,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:27:29,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:27:29,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:27:29,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:27:29,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-13 02:27:29,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:27:29,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:27:29,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:27:29,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:27:29,104 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:27:29,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:27:29,104 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:27:29,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:27:29,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:27:29,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:27:29,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 02:27:29,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 02:27:29,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:27:29,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:27:29,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 02:27:29,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:27:29,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:27:29,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:27:29,111 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 02:27:29,111 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 02:27:29,111 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 02:27:29,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:27:29,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:27:29,112 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:27:29,112 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:27:29,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:27:29,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:27:29,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:27:29,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:27:29,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:27:29,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:27:29,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:27:29,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:27:29,115 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:27:29,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:27:29,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:27:29,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:27:29,117 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_857cac52-3b23-4156-9859-d6e584e2e911/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-13 02:27:29,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:27:29,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:27:29,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:27:29,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:27:29,660 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:27:29,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-13 02:27:29,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/bf6979892/f6ce27b6c9ab45bc901f58bd922f967b/FLAG1be22ae4f [2021-11-13 02:27:30,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:27:30,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-13 02:27:30,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/bf6979892/f6ce27b6c9ab45bc901f58bd922f967b/FLAG1be22ae4f [2021-11-13 02:27:30,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/data/bf6979892/f6ce27b6c9ab45bc901f58bd922f967b [2021-11-13 02:27:30,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:27:30,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:27:30,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:30,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:27:30,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:27:30,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:30" (1/1) ... [2021-11-13 02:27:30,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10262979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:30, skipping insertion in model container [2021-11-13 02:27:30,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:30" (1/1) ... [2021-11-13 02:27:30,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:27:30,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:27:31,461 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-13 02:27:31,676 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-13 02:27:31,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:31,715 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:27:31,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:27:31,775 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-13 02:27:31,863 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-13 02:27:31,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:31,879 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:27:31,941 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-13 02:27:32,046 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_857cac52-3b23-4156-9859-d6e584e2e911/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-13 02:27:32,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:32,113 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:27:32,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32 WrapperNode [2021-11-13 02:27:32,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:32,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:27:32,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:27:32,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:27:32,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:27:32,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:27:32,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:27:32,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:27:32,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:27:32,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:27:32,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:27:32,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:27:32,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (1/1) ... [2021-11-13 02:27:32,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:27:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:27:32,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:27:32,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:27:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:27:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:27:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:27:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:27:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:27:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:27:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:27:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:27:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:27:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:27:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:27:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:27:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:27:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:27:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:27:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:27:32,723 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:27:37,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:27:37,585 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-13 02:27:37,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:37 BoogieIcfgContainer [2021-11-13 02:27:37,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:27:37,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:27:37,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:27:37,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:27:37,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:27:30" (1/3) ... [2021-11-13 02:27:37,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac643cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:37, skipping insertion in model container [2021-11-13 02:27:37,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:32" (2/3) ... [2021-11-13 02:27:37,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac643cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:37, skipping insertion in model container [2021-11-13 02:27:37,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:37" (3/3) ... [2021-11-13 02:27:37,598 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2021-11-13 02:27:37,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:27:37,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-13 02:27:37,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:27:37,668 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 [2021-11-13 02:27:37,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-13 02:27:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 02:27:37,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:37,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 02:27:37,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-13 02:27:37,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:37,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628076801] [2021-11-13 02:27:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:37,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:37,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:37,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:37,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:27:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:37,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:37,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:38,076 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 [2021-11-13 02:27:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:38,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:38,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:38,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628076801] [2021-11-13 02:27:38,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628076801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:38,119 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:38,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:27:38,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818365275] [2021-11-13 02:27:38,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:38,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:27:38,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:27:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:38,164 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:40,068 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-11-13 02:27:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:40,071 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 [2021-11-13 02:27:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:40,109 INFO L225 Difference]: With dead ends: 869 [2021-11-13 02:27:40,109 INFO L226 Difference]: Without dead ends: 867 [2021-11-13 02:27:40,111 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 [2021-11-13 02:27:40,119 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1512.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.49ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1800.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:40,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 16.49ms Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1800.55ms Time] [2021-11-13 02:27:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-13 02:27:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-11-13 02:27:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-11-13 02:27:40,267 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-11-13 02:27:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:40,267 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-11-13 02:27:40,267 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) [2021-11-13 02:27:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-11-13 02:27:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 02:27:40,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:40,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 02:27:40,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:40,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:40,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-13 02:27:40,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:40,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147314459] [2021-11-13 02:27:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:40,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:40,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:27:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:40,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:40,657 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 [2021-11-13 02:27:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:40,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:40,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:40,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147314459] [2021-11-13 02:27:40,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147314459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:40,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:40,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:27:40,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301466811] [2021-11-13 02:27:40,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:40,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:40,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:40,743 INFO L87 Difference]: Start difference. First operand 866 states and 923 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) [2021-11-13 02:27:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:45,063 INFO L93 Difference]: Finished difference Result 1160 states and 1251 transitions. [2021-11-13 02:27:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:45,064 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 [2021-11-13 02:27:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:45,073 INFO L225 Difference]: With dead ends: 1160 [2021-11-13 02:27:45,073 INFO L226 Difference]: Without dead ends: 1160 [2021-11-13 02:27:45,074 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 [2021-11-13 02:27:45,076 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 767 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3669.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.03ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4238.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:45,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 1382 Invalid, 912 Unknown, 0 Unchecked, 21.03ms Time], IncrementalHoareTripleChecker [18 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 4238.48ms Time] [2021-11-13 02:27:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-13 02:27:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 901. [2021-11-13 02:27:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 487 states have (on average 2.024640657084189) internal successors, (986), 895 states have internal predecessors, (986), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1002 transitions. [2021-11-13 02:27:45,116 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1002 transitions. Word has length 3 [2021-11-13 02:27:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:45,116 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1002 transitions. [2021-11-13 02:27:45,116 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) [2021-11-13 02:27:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1002 transitions. [2021-11-13 02:27:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 02:27:45,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:45,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:45,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:45,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:45,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-13 02:27:45,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:45,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723693287] [2021-11-13 02:27:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:45,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:45,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:45,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:45,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:27:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:45,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:45,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:45,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 02:27:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:45,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:45,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:45,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723693287] [2021-11-13 02:27:45,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723693287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:45,573 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:45,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:27:45,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061524201] [2021-11-13 02:27:45,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:45,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:27:45,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:27:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:45,575 INFO L87 Difference]: Start difference. First operand 901 states and 1002 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) [2021-11-13 02:27:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:47,378 INFO L93 Difference]: Finished difference Result 1078 states and 1206 transitions. [2021-11-13 02:27:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:47,381 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 [2021-11-13 02:27:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:47,389 INFO L225 Difference]: With dead ends: 1078 [2021-11-13 02:27:47,389 INFO L226 Difference]: Without dead ends: 1078 [2021-11-13 02:27:47,390 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 [2021-11-13 02:27:47,391 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 816 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1480.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1759.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:47,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 874 Invalid, 577 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1759.48ms Time] [2021-11-13 02:27:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-13 02:27:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 854. [2021-11-13 02:27:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 487 states have (on average 1.9219712525667352) internal successors, (936), 848 states have internal predecessors, (936), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 952 transitions. [2021-11-13 02:27:47,427 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 952 transitions. Word has length 8 [2021-11-13 02:27:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:47,428 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 952 transitions. [2021-11-13 02:27:47,428 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) [2021-11-13 02:27:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 952 transitions. [2021-11-13 02:27:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 02:27:47,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:47,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:47,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:47,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:47,643 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-13 02:27:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:47,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010090251] [2021-11-13 02:27:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:47,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:47,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:47,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:27:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:47,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:47,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:47,813 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 [2021-11-13 02:27:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:47,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:47,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:47,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010090251] [2021-11-13 02:27:47,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010090251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:47,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:47,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:27:47,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030512457] [2021-11-13 02:27:47,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:47,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:47,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:47,990 INFO L87 Difference]: Start difference. First operand 854 states and 952 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) [2021-11-13 02:27:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:52,423 INFO L93 Difference]: Finished difference Result 1110 states and 1201 transitions. [2021-11-13 02:27:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:52,424 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 [2021-11-13 02:27:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:52,432 INFO L225 Difference]: With dead ends: 1110 [2021-11-13 02:27:52,433 INFO L226 Difference]: Without dead ends: 1110 [2021-11-13 02:27:52,433 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 [2021-11-13 02:27:52,434 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 544 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3875.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.74ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4380.40ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:52,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1523 Invalid, 899 Unknown, 0 Unchecked, 11.74ms Time], IncrementalHoareTripleChecker [14 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 4380.40ms Time] [2021-11-13 02:27:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-13 02:27:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 844. [2021-11-13 02:27:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.895277207392197) internal successors, (923), 838 states have internal predecessors, (923), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 939 transitions. [2021-11-13 02:27:52,468 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 939 transitions. Word has length 8 [2021-11-13 02:27:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:52,469 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 939 transitions. [2021-11-13 02:27:52,469 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) [2021-11-13 02:27:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 939 transitions. [2021-11-13 02:27:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:27:52,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:52,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:52,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:52,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:52,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-11-13 02:27:52,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:52,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079001900] [2021-11-13 02:27:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:52,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:52,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:52,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:52,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:27:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:52,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:52,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:52,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:27:52,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:27:52,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:27:52,995 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 02:27:52,996 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 [2021-11-13 02:27:53,102 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 02:27:53,103 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 [2021-11-13 02:27:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:53,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:53,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:53,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079001900] [2021-11-13 02:27:53,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079001900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:53,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:53,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:27:53,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101793003] [2021-11-13 02:27:53,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:53,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:27:53,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:27:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:27:53,214 INFO L87 Difference]: Start difference. First operand 844 states and 939 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:55,643 INFO L93 Difference]: Finished difference Result 1061 states and 1185 transitions. [2021-11-13 02:27:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:27:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:55,651 INFO L225 Difference]: With dead ends: 1061 [2021-11-13 02:27:55,652 INFO L226 Difference]: Without dead ends: 1061 [2021-11-13 02:27:55,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:27:55,653 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 237 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2092.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2346.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:55,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 3042 Invalid, 370 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 2346.01ms Time] [2021-11-13 02:27:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-11-13 02:27:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 844. [2021-11-13 02:27:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.893223819301848) internal successors, (922), 838 states have internal predecessors, (922), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 938 transitions. [2021-11-13 02:27:55,685 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 938 transitions. Word has length 10 [2021-11-13 02:27:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:55,685 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 938 transitions. [2021-11-13 02:27:55,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 938 transitions. [2021-11-13 02:27:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 02:27:55,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:55,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:55,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:55,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:55,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-13 02:27:55,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:55,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625669146] [2021-11-13 02:27:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:55,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:55,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:55,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:55,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:27:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:56,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:56,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:56,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:56,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:56,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625669146] [2021-11-13 02:27:56,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625669146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:56,153 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:56,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:27:56,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929351595] [2021-11-13 02:27:56,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:56,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:56,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:56,156 INFO L87 Difference]: Start difference. First operand 844 states and 938 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:56,205 INFO L93 Difference]: Finished difference Result 811 states and 904 transitions. [2021-11-13 02:27:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:56,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-13 02:27:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:56,211 INFO L225 Difference]: With dead ends: 811 [2021-11-13 02:27:56,212 INFO L226 Difference]: Without dead ends: 811 [2021-11-13 02:27:56,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:56,213 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1556 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.06ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:56,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 32.06ms Time] [2021-11-13 02:27:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-13 02:27:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 802. [2021-11-13 02:27:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 469 states have (on average 1.8742004264392325) internal successors, (879), 796 states have internal predecessors, (879), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 895 transitions. [2021-11-13 02:27:56,240 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 895 transitions. Word has length 18 [2021-11-13 02:27:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:56,240 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 895 transitions. [2021-11-13 02:27:56,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 895 transitions. [2021-11-13 02:27:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:27:56,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:56,242 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] [2021-11-13 02:27:56,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:56,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:56,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-13 02:27:56,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:56,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502009485] [2021-11-13 02:27:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:56,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:56,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:56,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:27:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:56,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:56,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:56,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:56,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:56,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502009485] [2021-11-13 02:27:56,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502009485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:56,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:56,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:27:56,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910526730] [2021-11-13 02:27:56,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:56,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:27:56,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:56,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:27:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:27:56,758 INFO L87 Difference]: Start difference. First operand 802 states and 895 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:56,881 INFO L93 Difference]: Finished difference Result 790 states and 876 transitions. [2021-11-13 02:27:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 02:27:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:56,888 INFO L225 Difference]: With dead ends: 790 [2021-11-13 02:27:56,889 INFO L226 Difference]: Without dead ends: 790 [2021-11-13 02:27:56,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:27:56,890 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1488 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.94ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:56,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1553 Invalid, 84 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 90.94ms Time] [2021-11-13 02:27:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-13 02:27:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 780. [2021-11-13 02:27:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 461 states have (on average 1.8438177874186552) internal successors, (850), 774 states have internal predecessors, (850), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:56,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 866 transitions. [2021-11-13 02:27:56,923 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 866 transitions. Word has length 20 [2021-11-13 02:27:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:56,924 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 866 transitions. [2021-11-13 02:27:56,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 866 transitions. [2021-11-13 02:27:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 02:27:56,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:56,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:56,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:57,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:57,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-13 02:27:57,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:57,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307395985] [2021-11-13 02:27:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:57,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:57,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:57,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:27:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:57,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:57,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:57,364 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 [2021-11-13 02:27:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:57,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:57,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:57,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307395985] [2021-11-13 02:27:57,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307395985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:57,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:57,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:27:57,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869791168] [2021-11-13 02:27:57,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:57,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:57,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:57,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:57,670 INFO L87 Difference]: Start difference. First operand 780 states and 866 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:59,547 INFO L93 Difference]: Finished difference Result 1012 states and 1128 transitions. [2021-11-13 02:27:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:59,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-13 02:27:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:59,555 INFO L225 Difference]: With dead ends: 1012 [2021-11-13 02:27:59,555 INFO L226 Difference]: Without dead ends: 1012 [2021-11-13 02:27:59,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:27:59,556 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1362 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1512.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.95ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1831.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:59,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 786 Invalid, 670 Unknown, 0 Unchecked, 6.95ms Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1831.35ms Time] [2021-11-13 02:27:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-13 02:27:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 776. [2021-11-13 02:27:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 461 states have (on average 1.8351409978308026) internal successors, (846), 770 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:27:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 862 transitions. [2021-11-13 02:27:59,584 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 862 transitions. Word has length 34 [2021-11-13 02:27:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:59,584 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 862 transitions. [2021-11-13 02:27:59,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 862 transitions. [2021-11-13 02:27:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 02:27:59,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:59,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:59,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:59,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:59,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:27:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-13 02:27:59,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:59,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483491509] [2021-11-13 02:27:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:59,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:59,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:59,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:28:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:00,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:00,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:00,033 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 [2021-11-13 02:28:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:00,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:00,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:00,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483491509] [2021-11-13 02:28:00,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483491509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:00,895 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:00,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:28:00,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973976961] [2021-11-13 02:28:00,896 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:00,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:28:00,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:28:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:28:00,898 INFO L87 Difference]: Start difference. First operand 776 states and 862 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:06,750 INFO L93 Difference]: Finished difference Result 1050 states and 1132 transitions. [2021-11-13 02:28:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:28:06,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-13 02:28:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:06,758 INFO L225 Difference]: With dead ends: 1050 [2021-11-13 02:28:06,758 INFO L226 Difference]: Without dead ends: 1050 [2021-11-13 02:28:06,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:28:06,760 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1702 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5124.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5707.49ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:06,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1248 Invalid, 924 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [31 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 5707.49ms Time] [2021-11-13 02:28:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-13 02:28:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 772. [2021-11-13 02:28:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 461 states have (on average 1.82646420824295) internal successors, (842), 766 states have internal predecessors, (842), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:28:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 858 transitions. [2021-11-13 02:28:06,785 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 858 transitions. Word has length 34 [2021-11-13 02:28:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:06,785 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 858 transitions. [2021-11-13 02:28:06,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 858 transitions. [2021-11-13 02:28:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 02:28:06,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:06,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:06,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 02:28:06,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:06,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-13 02:28:07,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:07,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984637990] [2021-11-13 02:28:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:07,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:07,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:07,002 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:07,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:28:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:07,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:28:07,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:07,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:07,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:07,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984637990] [2021-11-13 02:28:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984637990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:07,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:07,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 02:28:07,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845700110] [2021-11-13 02:28:07,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:28:07,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:28:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:28:07,522 INFO L87 Difference]: Start difference. First operand 772 states and 858 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:07,589 INFO L93 Difference]: Finished difference Result 775 states and 857 transitions. [2021-11-13 02:28:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:28:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-13 02:28:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:07,595 INFO L225 Difference]: With dead ends: 775 [2021-11-13 02:28:07,595 INFO L226 Difference]: Without dead ends: 775 [2021-11-13 02:28:07,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:28:07,597 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 725 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:07,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1531 Invalid, 43 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 44.35ms Time] [2021-11-13 02:28:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-13 02:28:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 766. [2021-11-13 02:28:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 455 states have (on average 1.8285714285714285) internal successors, (832), 760 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:28:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 848 transitions. [2021-11-13 02:28:07,619 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 848 transitions. Word has length 49 [2021-11-13 02:28:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:07,619 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 848 transitions. [2021-11-13 02:28:07,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 848 transitions. [2021-11-13 02:28:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 02:28:07,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:07,622 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] [2021-11-13 02:28:07,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:07,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:07,838 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-13 02:28:07,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:07,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043950487] [2021-11-13 02:28:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:07,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:07,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:28:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:08,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:28:08,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:08,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:08,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:08,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043950487] [2021-11-13 02:28:08,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043950487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:08,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:08,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:28:08,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720334125] [2021-11-13 02:28:08,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:08,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:28:08,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:28:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:28:08,975 INFO L87 Difference]: Start difference. First operand 766 states and 848 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:09,138 INFO L93 Difference]: Finished difference Result 966 states and 1070 transitions. [2021-11-13 02:28:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:28:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 02:28:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:09,143 INFO L225 Difference]: With dead ends: 966 [2021-11-13 02:28:09,144 INFO L226 Difference]: Without dead ends: 966 [2021-11-13 02:28:09,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:28:09,145 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 229 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:09,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1547 Invalid, 47 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 149.41ms Time] [2021-11-13 02:28:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-13 02:28:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 911. [2021-11-13 02:28:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 595 states have (on average 1.749579831932773) internal successors, (1041), 905 states have internal predecessors, (1041), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:28:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1067 transitions. [2021-11-13 02:28:09,172 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1067 transitions. Word has length 57 [2021-11-13 02:28:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:09,172 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1067 transitions. [2021-11-13 02:28:09,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1067 transitions. [2021-11-13 02:28:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-13 02:28:09,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:09,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:09,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:09,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:09,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-13 02:28:09,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:09,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563886850] [2021-11-13 02:28:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:09,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:09,392 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:09,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:28:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:09,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:28:09,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:09,813 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 [2021-11-13 02:28:09,820 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 [2021-11-13 02:28:10,605 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 02:28:10,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-13 02:28:10,624 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 02:28:10,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-13 02:28:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:10,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:16,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:16,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563886850] [2021-11-13 02:28:16,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563886850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:16,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:16,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:28:16,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561970723] [2021-11-13 02:28:16,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:16,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:28:16,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:28:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 02:28:16,282 INFO L87 Difference]: Start difference. First operand 911 states and 1067 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:21,213 INFO L93 Difference]: Finished difference Result 1391 states and 1625 transitions. [2021-11-13 02:28:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:28:21,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-13 02:28:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:21,223 INFO L225 Difference]: With dead ends: 1391 [2021-11-13 02:28:21,223 INFO L226 Difference]: Without dead ends: 1391 [2021-11-13 02:28:21,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 02:28:21,224 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1150 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4132.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.05ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 4832.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:21,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1535 Invalid, 2287 Unknown, 0 Unchecked, 17.05ms Time], IncrementalHoareTripleChecker [41 Valid, 1119 Invalid, 0 Unknown, 1127 Unchecked, 4832.77ms Time] [2021-11-13 02:28:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-13 02:28:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 889. [2021-11-13 02:28:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 605 states have (on average 1.6975206611570248) internal successors, (1027), 883 states have internal predecessors, (1027), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:28:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1053 transitions. [2021-11-13 02:28:21,251 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1053 transitions. Word has length 60 [2021-11-13 02:28:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:21,252 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1053 transitions. [2021-11-13 02:28:21,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1053 transitions. [2021-11-13 02:28:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 02:28:21,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:21,254 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] [2021-11-13 02:28:21,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:21,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:21,470 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-13 02:28:21,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:21,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933455337] [2021-11-13 02:28:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:21,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:21,473 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:21,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:28:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:21,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:28:21,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:21,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:22,028 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 [2021-11-13 02:28:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:22,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:22,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933455337] [2021-11-13 02:28:22,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933455337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:22,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:22,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:28:22,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278147178] [2021-11-13 02:28:22,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:22,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:28:22,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:28:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:28:22,409 INFO L87 Difference]: Start difference. First operand 889 states and 1053 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) [2021-11-13 02:28:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:24,071 INFO L93 Difference]: Finished difference Result 887 states and 1051 transitions. [2021-11-13 02:28:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:28:24,072 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 [2021-11-13 02:28:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:24,076 INFO L225 Difference]: With dead ends: 887 [2021-11-13 02:28:24,076 INFO L226 Difference]: Without dead ends: 887 [2021-11-13 02:28:24,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:28:24,077 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 706 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1405.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1635.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:24,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 454 Invalid, 381 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [10 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1635.65ms Time] [2021-11-13 02:28:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-13 02:28:24,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-13 02:28:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 605 states have (on average 1.6942148760330578) internal successors, (1025), 881 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:28:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1051 transitions. [2021-11-13 02:28:24,100 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1051 transitions. Word has length 62 [2021-11-13 02:28:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:24,101 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1051 transitions. [2021-11-13 02:28:24,101 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) [2021-11-13 02:28:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1051 transitions. [2021-11-13 02:28:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 02:28:24,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:24,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:24,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 02:28:24,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:24,316 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-13 02:28:24,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:24,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204164785] [2021-11-13 02:28:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:24,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:24,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:24,321 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:24,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:28:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:24,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:28:24,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:24,699 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 [2021-11-13 02:28:24,719 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 [2021-11-13 02:28:24,766 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 [2021-11-13 02:28:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:24,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:24,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:24,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204164785] [2021-11-13 02:28:24,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204164785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:24,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:24,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 02:28:24,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549706294] [2021-11-13 02:28:24,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:24,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:28:24,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:28:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:28:24,942 INFO L87 Difference]: Start difference. First operand 887 states and 1051 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:27,535 INFO L93 Difference]: Finished difference Result 886 states and 1050 transitions. [2021-11-13 02:28:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:28:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 02:28:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:27,541 INFO L225 Difference]: With dead ends: 886 [2021-11-13 02:28:27,541 INFO L226 Difference]: Without dead ends: 886 [2021-11-13 02:28:27,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:28:27,542 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 4 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2187.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2524.97ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:27,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1889 Invalid, 1005 Unknown, 0 Unchecked, 6.45ms Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2524.97ms Time] [2021-11-13 02:28:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-13 02:28:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2021-11-13 02:28:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 605 states have (on average 1.6925619834710743) internal successors, (1024), 880 states have internal predecessors, (1024), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:28:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1050 transitions. [2021-11-13 02:28:27,565 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1050 transitions. Word has length 65 [2021-11-13 02:28:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:27,566 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1050 transitions. [2021-11-13 02:28:27,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1050 transitions. [2021-11-13 02:28:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 02:28:27,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:27,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:27,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:27,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:27,784 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-13 02:28:27,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:27,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584327974] [2021-11-13 02:28:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:27,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:27,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:27,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:27,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:28:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:28,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:28:28,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:28,217 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 [2021-11-13 02:28:28,242 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 [2021-11-13 02:28:28,251 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 [2021-11-13 02:28:28,335 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 [2021-11-13 02:28:28,340 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 [2021-11-13 02:28:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:28,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:28,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:28,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584327974] [2021-11-13 02:28:28,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584327974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:28,742 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:28,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 02:28:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080880846] [2021-11-13 02:28:28,742 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:28,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:28:28,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:28:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:28:28,745 INFO L87 Difference]: Start difference. First operand 886 states and 1050 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:36,539 INFO L93 Difference]: Finished difference Result 885 states and 1049 transitions. [2021-11-13 02:28:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:28:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 02:28:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:36,547 INFO L225 Difference]: With dead ends: 885 [2021-11-13 02:28:36,547 INFO L226 Difference]: Without dead ends: 885 [2021-11-13 02:28:36,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:28:36,548 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6944.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7694.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:36,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2675 Invalid, 1660 Unknown, 0 Unchecked, 10.81ms Time], IncrementalHoareTripleChecker [1 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 7694.22ms Time] [2021-11-13 02:28:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-13 02:28:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-11-13 02:28:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 604 states have (on average 1.6937086092715232) internal successors, (1023), 879 states have internal predecessors, (1023), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:28:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1049 transitions. [2021-11-13 02:28:36,570 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1049 transitions. Word has length 65 [2021-11-13 02:28:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:36,571 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1049 transitions. [2021-11-13 02:28:36,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:28:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1049 transitions. [2021-11-13 02:28:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 02:28:36,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:36,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:36,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:36,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:36,789 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1478911951, now seen corresponding path program 1 times [2021-11-13 02:28:36,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:36,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977556811] [2021-11-13 02:28:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:36,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:36,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:36,791 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:36,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:28:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:28:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:37,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:37,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:37,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977556811] [2021-11-13 02:28:37,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977556811] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:37,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:37,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:28:37,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905778426] [2021-11-13 02:28:37,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:37,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:28:37,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:28:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:28:37,398 INFO L87 Difference]: Start difference. First operand 885 states and 1049 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:28:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:37,536 INFO L93 Difference]: Finished difference Result 895 states and 1062 transitions. [2021-11-13 02:28:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:28:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-13 02:28:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:37,545 INFO L225 Difference]: With dead ends: 895 [2021-11-13 02:28:37,545 INFO L226 Difference]: Without dead ends: 895 [2021-11-13 02:28:37,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:28:37,546 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 7 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.14ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:37,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2877 Invalid, 37 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 97.14ms Time] [2021-11-13 02:28:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-13 02:28:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-13 02:28:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 612 states have (on average 1.6911764705882353) internal successors, (1035), 888 states have internal predecessors, (1035), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-13 02:28:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1062 transitions. [2021-11-13 02:28:37,573 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1062 transitions. Word has length 73 [2021-11-13 02:28:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1062 transitions. [2021-11-13 02:28:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:28:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1062 transitions. [2021-11-13 02:28:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 02:28:37,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:37,576 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:37,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:37,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:37,792 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash 165650223, now seen corresponding path program 1 times [2021-11-13 02:28:37,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:37,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67878403] [2021-11-13 02:28:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:37,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:37,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:37,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:28:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:38,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:38,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:38,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:38,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67878403] [2021-11-13 02:28:38,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67878403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:38,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1437288149] [2021-11-13 02:28:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:38,562 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:28:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:28:38,568 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:28:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 02:28:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:38,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:38,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:38,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:39,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1437288149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:39,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85612031] [2021-11-13 02:28:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:39,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:28:39,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:28:39,191 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:28:39,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 02:28:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:39,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:28:39,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:39,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:39,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85612031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:39,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:28:39,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-13 02:28:39,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338012851] [2021-11-13 02:28:39,841 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:28:39,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 02:28:39,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 02:28:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:28:39,843 INFO L87 Difference]: Start difference. First operand 895 states and 1062 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 02:28:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:40,325 INFO L93 Difference]: Finished difference Result 909 states and 1079 transitions. [2021-11-13 02:28:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:28:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-13 02:28:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:40,331 INFO L225 Difference]: With dead ends: 909 [2021-11-13 02:28:40,331 INFO L226 Difference]: Without dead ends: 903 [2021-11-13 02:28:40,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-13 02:28:40,333 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 31 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:40,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 4318 Invalid, 141 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 227.45ms Time] [2021-11-13 02:28:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-13 02:28:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2021-11-13 02:28:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 618 states have (on average 1.686084142394822) internal successors, (1042), 894 states have internal predecessors, (1042), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-13 02:28:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1069 transitions. [2021-11-13 02:28:40,356 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1069 transitions. Word has length 75 [2021-11-13 02:28:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:40,356 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1069 transitions. [2021-11-13 02:28:40,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 02:28:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1069 transitions. [2021-11-13 02:28:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 02:28:40,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:40,358 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:40,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-13 02:28:40,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:40,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:28:40,970 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:28:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1807156719, now seen corresponding path program 2 times [2021-11-13 02:28:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:40,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901752422] [2021-11-13 02:28:40,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:28:40,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:40,971 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:40,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 02:28:41,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:28:41,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:28:41,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:28:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:41,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:42,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901752422] [2021-11-13 02:28:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901752422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1152331876] [2021-11-13 02:28:42,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:28:42,233 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:28:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:28:42,234 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:28:42,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 02:28:43,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:28:43,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:28:43,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:28:43,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:43,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:28:43,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1152331876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:43,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624722065] [2021-11-13 02:28:43,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:28:43,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:28:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:28:43,446 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:28:43,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 02:29:13,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:29:13,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:29:13,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 02:29:13,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:13,518 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 02:29:13,519 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 [2021-11-13 02:29:13,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 02:29:13,628 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 [2021-11-13 02:29:13,636 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 [2021-11-13 02:29:13,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-13 02:29:13,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-13 02:31:58,336 WARN L227 SmtUtils]: Spent 41.02s 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) [2021-11-13 02:31:58,337 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-13 02:31:58,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-13 02:32:39,141 WARN L227 SmtUtils]: Spent 40.79s on a formula simplification. DAG size of input: 118 DAG size of output: 40 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 02:32:39,141 INFO L354 Elim1Store]: treesize reduction 1174, result has 7.8 percent of original size [2021-11-13 02:32:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 230 [2021-11-13 02:32:50,040 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-13 02:32:50,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 104 [2021-11-13 02:32:50,061 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-13 02:32:50,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 41 [2021-11-13 02:33:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:33:01,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:16,224 WARN L227 SmtUtils]: Spent 13.70s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 02:33:46,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse3 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse3) (bvadd .cse3 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-13 02:33:53,922 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse4 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse4) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse4)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-13 02:34:57,499 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse6 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse6) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse6)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse7 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse8))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse7) (bvadd .cse7 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse9 .cse10) .cse11 .cse10) .cse12 .cse10) .cse13 .cse10) .cse14 .cse10) .cse15 .cse10))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse9 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from false [2021-11-13 02:36:28,413 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 .cse12) .cse13 .cse12) .cse14 .cse12) .cse15 .cse12) .cse16 .cse12) .cse17 .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from false [2021-11-13 02:36:37,339 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse9 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5) .cse10 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from false [2021-11-13 02:37:29,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-13 02:37:29,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:37:29,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-13 02:37:29,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643279622] [2021-11-13 02:37:29,076 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-13 02:37:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 02:37:29,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 02:37:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1070, Unknown=123, NotChecked=370, Total=1722 [2021-11-13 02:37:29,077 INFO L87 Difference]: Start difference. First operand 901 states and 1069 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:38:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:35,003 INFO L93 Difference]: Finished difference Result 927 states and 1105 transitions. [2021-11-13 02:38:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 02:38:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-13 02:38:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:35,011 INFO L225 Difference]: With dead ends: 927 [2021-11-13 02:38:35,012 INFO L226 Difference]: Without dead ends: 923 [2021-11-13 02:38:35,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 408.2s TimeCoverageRelationStatistics Valid=500, Invalid=2456, Unknown=144, NotChecked=560, Total=3660 [2021-11-13 02:38:35,014 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 81 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3564.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.42ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3688.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:35,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5793 Invalid, 353 Unknown, 0 Unchecked, 7.42ms Time], IncrementalHoareTripleChecker [60 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 3688.01ms Time] [2021-11-13 02:38:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-13 02:38:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 913. [2021-11-13 02:38:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 630 states have (on average 1.6793650793650794) internal successors, (1058), 906 states have internal predecessors, (1058), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-13 02:38:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1085 transitions. [2021-11-13 02:38:35,039 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1085 transitions. Word has length 79 [2021-11-13 02:38:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:35,039 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1085 transitions. [2021-11-13 02:38:35,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:38:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1085 transitions. [2021-11-13 02:38:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:38:35,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:35,041 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:35,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:35,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:35,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:35,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:35,660 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 02:38:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1000230033, now seen corresponding path program 3 times [2021-11-13 02:38:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:35,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002861687] [2021-11-13 02:38:35,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:38:35,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:35,663 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:35,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:38:36,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 02:38:36,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:36,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 02:38:36,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:41,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:51,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:51,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002861687] [2021-11-13 02:38:51,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002861687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:51,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724741722] [2021-11-13 02:38:51,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:38:51,928 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:38:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:38:51,934 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:38:51,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 02:38:54,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 02:38:54,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:38:54,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 02:38:54,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:54,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:56,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1724741722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:38:56,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356476300] [2021-11-13 02:38:56,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:38:56,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:38:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:56,897 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:38:56,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_857cac52-3b23-4156-9859-d6e584e2e911/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process