./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH --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 df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:44,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:44,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:44,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:44,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:44,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:44,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:44,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:44,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:44,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:44,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:44,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:44,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:44,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:44,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:44,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:44,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:44,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:44,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:44,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:44,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:44,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:44,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:44,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:44,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:44,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:44,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:44,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:44,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:44,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:44,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:44,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:44,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:44,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:44,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:44,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:44,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:44,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:44,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:44,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:44,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:44,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:37:44,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:44,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:44,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:44,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:44,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:44,425 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:44,425 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:37:44,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:44,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:44,426 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:37:44,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:37:44,427 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:44,427 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:37:44,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:37:44,428 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:37:44,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:37:44,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:37:44,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:44,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:44,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:37:44,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:44,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:44,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:44,430 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:37:44,430 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:37:44,431 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:37:44,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:44,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:44,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:44,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:44,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:44,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:44,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:44,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:44,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:44,435 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:37:44,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:37:44,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:44,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:44,436 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_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c [2021-11-03 04:37:44,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:44,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:44,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:44,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:44,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:44,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-11-03 04:37:44,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/fa696fc91/983a9b696e6b423ab5d132c8ef497cff/FLAG05c14a286 [2021-11-03 04:37:45,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:45,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-11-03 04:37:45,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/fa696fc91/983a9b696e6b423ab5d132c8ef497cff/FLAG05c14a286 [2021-11-03 04:37:45,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/fa696fc91/983a9b696e6b423ab5d132c8ef497cff [2021-11-03 04:37:45,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:45,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:45,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:45,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:45,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:45,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:45" (1/1) ... [2021-11-03 04:37:45,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7f481d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:45, skipping insertion in model container [2021-11-03 04:37:45,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:45" (1/1) ... [2021-11-03 04:37:45,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:45,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:46,192 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-11-03 04:37:46,404 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-11-03 04:37:46,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:46,429 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) [2021-11-03 04:37:46,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e746dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:46, skipping insertion in model container [2021-11-03 04:37:46,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:46,430 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:37:46,433 INFO L168 Benchmark]: Toolchain (without parser) took 797.50 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 61.1 MB in the beginning and 92.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:46,433 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:37:46,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.85 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 60.9 MB in the beginning and 92.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:46,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 794.85 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 60.9 MB in the beginning and 92.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH --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 df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:48,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:48,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:48,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:48,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:48,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:48,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:48,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:48,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:48,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:48,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:48,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:48,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:48,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:48,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:48,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:48,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:48,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:48,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:48,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:48,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:48,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:48,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:48,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:48,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:48,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:48,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:48,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:48,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:48,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:48,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:48,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:48,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:48,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:48,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:48,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:48,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:48,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:48,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:48,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:48,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:48,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:37:48,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:48,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:48,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:48,755 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:48,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:48,755 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:48,755 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:48,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:48,756 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:48,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:37:48,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:37:48,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:48,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:48,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:37:48,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:48,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:48,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:48,759 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:37:48,760 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:37:48,760 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:37:48,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:48,760 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:48,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:37:48,761 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:37:48,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:48,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:48,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:48,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:37:48,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:48,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:48,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:48,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:48,763 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:37:48,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:37:48,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:48,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:48,764 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_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c [2021-11-03 04:37:49,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:49,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:49,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:49,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:49,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:49,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-11-03 04:37:49,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/8b5fb59ae/61193a240590450f8c30794b04c69e94/FLAG6f42e3f6f [2021-11-03 04:37:49,985 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:49,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-11-03 04:37:50,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/8b5fb59ae/61193a240590450f8c30794b04c69e94/FLAG6f42e3f6f [2021-11-03 04:37:50,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/data/8b5fb59ae/61193a240590450f8c30794b04c69e94 [2021-11-03 04:37:50,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:50,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:50,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:50,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:50,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:50,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:50" (1/1) ... [2021-11-03 04:37:50,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d738b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:50, skipping insertion in model container [2021-11-03 04:37:50,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:50" (1/1) ... [2021-11-03 04:37:50,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:50,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:50,648 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-11-03 04:37:50,806 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-11-03 04:37:50,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:50,826 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:37:50,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:50,888 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-11-03 04:37:50,981 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-11-03 04:37:50,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:50,989 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:37:51,014 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-11-03 04:37:51,078 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_54d108b3-7593-47df-9ddd-9f2180f8227e/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-11-03 04:37:51,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:51,154 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:37:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51 WrapperNode [2021-11-03 04:37:51,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:51,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:51,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:37:51,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:37:51,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:51,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:37:51,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:37:51,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:37:51,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:37:51,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:37:51,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:37:51,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:37:51,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (1/1) ... [2021-11-03 04:37:51,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:51,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:37:51,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:37:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:37:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:37:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:37:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:37:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:37:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:37:58,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:37:58,039 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 04:37:58,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:58 BoogieIcfgContainer [2021-11-03 04:37:58,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:37:58,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:37:58,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:37:58,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:37:58,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:37:50" (1/3) ... [2021-11-03 04:37:58,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:58, skipping insertion in model container [2021-11-03 04:37:58,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:51" (2/3) ... [2021-11-03 04:37:58,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:58, skipping insertion in model container [2021-11-03 04:37:58,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:58" (3/3) ... [2021-11-03 04:37:58,050 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-1.i [2021-11-03 04:37:58,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:37:58,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 733 error locations. [2021-11-03 04:37:58,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:37:58,104 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 [2021-11-03 04:37:58,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2021-11-03 04:37:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 1473 states, 739 states have (on average 2.230040595399188) internal successors, (1648), 1472 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:37:58,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:58,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:37:58,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:37:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 04:37:58,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:37:58,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045883288] [2021-11-03 04:37:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:58,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:37:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:37:58,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:37:58,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:37:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:58,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:37:58,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:58,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:58,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:58,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045883288] [2021-11-03 04:37:58,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045883288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:58,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:58,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:37:58,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637387072] [2021-11-03 04:37:58,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:37:58,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:37:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:37:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:37:58,472 INFO L87 Difference]: Start difference. First operand has 1473 states, 739 states have (on average 2.230040595399188) internal successors, (1648), 1472 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 04:37:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:37:58,586 INFO L93 Difference]: Finished difference Result 1455 states and 1534 transitions. [2021-11-03 04:37:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:37:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-03 04:37:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:37:58,630 INFO L225 Difference]: With dead ends: 1455 [2021-11-03 04:37:58,630 INFO L226 Difference]: Without dead ends: 1453 [2021-11-03 04:37:58,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:37:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-03 04:37:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1453. [2021-11-03 04:37:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 730 states have (on average 2.0986301369863014) internal successors, (1532), 1452 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1532 transitions. [2021-11-03 04:37:58,773 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1532 transitions. Word has length 5 [2021-11-03 04:37:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:37:58,774 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1532 transitions. [2021-11-03 04:37:58,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 04:37:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1532 transitions. [2021-11-03 04:37:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:37:58,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:58,775 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:37:58,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:37:58,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:37:58,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:37:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 04:37:59,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:37:59,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774951490] [2021-11-03 04:37:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:59,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:37:59,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:37:59,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:37:59,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:37:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:59,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:37:59,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:59,250 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 [2021-11-03 04:37:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:59,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:59,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:59,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774951490] [2021-11-03 04:37:59,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774951490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:59,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:59,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:37:59,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187092496] [2021-11-03 04:37:59,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:37:59,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:37:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:37:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:37:59,287 INFO L87 Difference]: Start difference. First operand 1453 states and 1532 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 04:38:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:02,112 INFO L93 Difference]: Finished difference Result 1719 states and 1836 transitions. [2021-11-03 04:38:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:02,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-03 04:38:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:02,121 INFO L225 Difference]: With dead ends: 1719 [2021-11-03 04:38:02,121 INFO L226 Difference]: Without dead ends: 1719 [2021-11-03 04:38:02,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-03 04:38:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1438. [2021-11-03 04:38:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 806 states have (on average 1.9553349875930521) internal successors, (1576), 1437 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1576 transitions. [2021-11-03 04:38:02,156 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1576 transitions. Word has length 5 [2021-11-03 04:38:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:02,156 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 1576 transitions. [2021-11-03 04:38:02,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 04:38:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1576 transitions. [2021-11-03 04:38:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:38:02,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:02,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:38:02,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:38:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:02,369 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 04:38:02,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:02,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015258235] [2021-11-03 04:38:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:02,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:02,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:02,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:02,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:38:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:02,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:02,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:02,568 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 [2021-11-03 04:38:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:02,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:02,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:02,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015258235] [2021-11-03 04:38:02,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015258235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:02,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:02,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:38:02,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378336678] [2021-11-03 04:38:02,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:02,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:02,680 INFO L87 Difference]: Start difference. First operand 1438 states and 1576 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 04:38:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:09,005 INFO L93 Difference]: Finished difference Result 2024 states and 2207 transitions. [2021-11-03 04:38:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-03 04:38:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:09,016 INFO L225 Difference]: With dead ends: 2024 [2021-11-03 04:38:09,016 INFO L226 Difference]: Without dead ends: 2024 [2021-11-03 04:38:09,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:09,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-03 04:38:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1594. [2021-11-03 04:38:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 972 states have (on average 1.9362139917695473) internal successors, (1882), 1593 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 1882 transitions. [2021-11-03 04:38:09,053 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 1882 transitions. Word has length 5 [2021-11-03 04:38:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:09,054 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 1882 transitions. [2021-11-03 04:38:09,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 04:38:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 1882 transitions. [2021-11-03 04:38:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:38:09,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:09,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:38:09,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:09,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:09,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 04:38:09,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:09,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237923194] [2021-11-03 04:38:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:09,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:09,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:09,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:38:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:09,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:38:09,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:09,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:09,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237923194] [2021-11-03 04:38:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237923194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:09,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:09,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:38:09,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545863839] [2021-11-03 04:38:09,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:09,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:09,467 INFO L87 Difference]: Start difference. First operand 1594 states and 1882 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 04:38:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:09,610 INFO L93 Difference]: Finished difference Result 3184 states and 3759 transitions. [2021-11-03 04:38:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-03 04:38:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:09,627 INFO L225 Difference]: With dead ends: 3184 [2021-11-03 04:38:09,628 INFO L226 Difference]: Without dead ends: 3184 [2021-11-03 04:38:09,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2021-11-03 04:38:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2557. [2021-11-03 04:38:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 1935 states have (on average 1.9395348837209303) internal successors, (3753), 2556 states have internal predecessors, (3753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3753 transitions. [2021-11-03 04:38:09,724 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3753 transitions. Word has length 6 [2021-11-03 04:38:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:09,724 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3753 transitions. [2021-11-03 04:38:09,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 04:38:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3753 transitions. [2021-11-03 04:38:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:38:09,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:09,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:09,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:09,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:09,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 04:38:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:09,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159356829] [2021-11-03 04:38:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:09,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:09,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:09,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:38:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:10,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:38:10,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:10,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:10,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:10,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159356829] [2021-11-03 04:38:10,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159356829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:10,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:10,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:38:10,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007148344] [2021-11-03 04:38:10,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:10,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:10,198 INFO L87 Difference]: Start difference. First operand 2557 states and 3753 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:10,242 INFO L93 Difference]: Finished difference Result 2497 states and 3667 transitions. [2021-11-03 04:38:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:38:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:10,257 INFO L225 Difference]: With dead ends: 2497 [2021-11-03 04:38:10,257 INFO L226 Difference]: Without dead ends: 2497 [2021-11-03 04:38:10,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-11-03 04:38:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2497. [2021-11-03 04:38:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 1899 states have (on average 1.9310163243812533) internal successors, (3667), 2496 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3667 transitions. [2021-11-03 04:38:10,320 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3667 transitions. Word has length 11 [2021-11-03 04:38:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:10,322 INFO L470 AbstractCegarLoop]: Abstraction has 2497 states and 3667 transitions. [2021-11-03 04:38:10,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3667 transitions. [2021-11-03 04:38:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:38:10,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:10,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:10,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:10,538 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 04:38:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:10,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316653210] [2021-11-03 04:38:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:10,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:10,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:10,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:38:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:10,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:10,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:10,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:10,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316653210] [2021-11-03 04:38:10,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316653210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:10,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:10,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:38:10,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884919063] [2021-11-03 04:38:10,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:38:10,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:38:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:10,779 INFO L87 Difference]: Start difference. First operand 2497 states and 3667 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:10,864 INFO L93 Difference]: Finished difference Result 2469 states and 3611 transitions. [2021-11-03 04:38:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:38:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:10,877 INFO L225 Difference]: With dead ends: 2469 [2021-11-03 04:38:10,877 INFO L226 Difference]: Without dead ends: 2469 [2021-11-03 04:38:10,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:38:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-11-03 04:38:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-11-03 04:38:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1883 states have (on average 1.916622411046203) internal successors, (3609), 2466 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3609 transitions. [2021-11-03 04:38:10,934 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3609 transitions. Word has length 13 [2021-11-03 04:38:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:10,957 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3609 transitions. [2021-11-03 04:38:10,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3609 transitions. [2021-11-03 04:38:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:38:10,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:10,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:10,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:11,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:11,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 04:38:11,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:11,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137870436] [2021-11-03 04:38:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:11,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:11,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:11,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:38:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:11,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:11,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:11,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:38:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:11,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:11,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137870436] [2021-11-03 04:38:11,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137870436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:11,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:11,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:38:11,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105998252] [2021-11-03 04:38:11,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:11,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:11,595 INFO L87 Difference]: Start difference. First operand 2467 states and 3609 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:14,657 INFO L93 Difference]: Finished difference Result 3811 states and 5399 transitions. [2021-11-03 04:38:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:38:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:14,678 INFO L225 Difference]: With dead ends: 3811 [2021-11-03 04:38:14,678 INFO L226 Difference]: Without dead ends: 3811 [2021-11-03 04:38:14,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2021-11-03 04:38:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 2463. [2021-11-03 04:38:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 1883 states have (on average 1.9123738714816783) internal successors, (3601), 2462 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3601 transitions. [2021-11-03 04:38:14,741 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3601 transitions. Word has length 27 [2021-11-03 04:38:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:14,741 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3601 transitions. [2021-11-03 04:38:14,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3601 transitions. [2021-11-03 04:38:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:38:14,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:14,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:14,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:14,956 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 04:38:14,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:14,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015930612] [2021-11-03 04:38:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:14,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:14,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:14,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:38:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:15,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:38:15,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:15,196 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 [2021-11-03 04:38:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:15,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:15,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:15,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015930612] [2021-11-03 04:38:15,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015930612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:15,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:15,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:38:15,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643220785] [2021-11-03 04:38:15,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:15,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:38:15,869 INFO L87 Difference]: Start difference. First operand 2463 states and 3601 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:24,346 INFO L93 Difference]: Finished difference Result 3066 states and 4239 transitions. [2021-11-03 04:38:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:38:24,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:38:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:24,360 INFO L225 Difference]: With dead ends: 3066 [2021-11-03 04:38:24,360 INFO L226 Difference]: Without dead ends: 3066 [2021-11-03 04:38:24,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:38:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-11-03 04:38:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2459. [2021-11-03 04:38:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 1883 states have (on average 1.9081253319171534) internal successors, (3593), 2458 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3593 transitions. [2021-11-03 04:38:24,414 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3593 transitions. Word has length 27 [2021-11-03 04:38:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:24,414 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 3593 transitions. [2021-11-03 04:38:24,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3593 transitions. [2021-11-03 04:38:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:38:24,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:24,416 INFO L513 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] [2021-11-03 04:38:24,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:24,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:24,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 04:38:24,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:24,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233977338] [2021-11-03 04:38:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:24,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:24,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:24,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:38:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:24,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:24,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:25,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:25,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233977338] [2021-11-03 04:38:25,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233977338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:25,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:25,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:38:25,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064427253] [2021-11-03 04:38:25,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:38:25,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:38:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:38:25,144 INFO L87 Difference]: Start difference. First operand 2459 states and 3593 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:25,204 INFO L93 Difference]: Finished difference Result 2447 states and 3573 transitions. [2021-11-03 04:38:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:38:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-03 04:38:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:25,216 INFO L225 Difference]: With dead ends: 2447 [2021-11-03 04:38:25,216 INFO L226 Difference]: Without dead ends: 2447 [2021-11-03 04:38:25,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:38:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-11-03 04:38:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2447. [2021-11-03 04:38:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1871 states have (on average 1.9096739711384287) internal successors, (3573), 2446 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3573 transitions. [2021-11-03 04:38:25,258 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3573 transitions. Word has length 42 [2021-11-03 04:38:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:25,260 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3573 transitions. [2021-11-03 04:38:25,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3573 transitions. [2021-11-03 04:38:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:38:25,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:25,265 INFO L513 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] [2021-11-03 04:38:25,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:25,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:25,478 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:25,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 04:38:25,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:25,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456258228] [2021-11-03 04:38:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:25,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:25,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:25,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:38:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:25,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:38:25,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:26,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:26,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:26,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456258228] [2021-11-03 04:38:26,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456258228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:26,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:26,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:38:26,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936104375] [2021-11-03 04:38:26,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:38:26,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:38:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:26,483 INFO L87 Difference]: Start difference. First operand 2447 states and 3573 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:26,570 INFO L93 Difference]: Finished difference Result 2263 states and 3218 transitions. [2021-11-03 04:38:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:38:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-03 04:38:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:26,582 INFO L225 Difference]: With dead ends: 2263 [2021-11-03 04:38:26,582 INFO L226 Difference]: Without dead ends: 2263 [2021-11-03 04:38:26,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:38:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-03 04:38:26,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2021-11-03 04:38:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1687 states have (on average 1.9075281564908122) internal successors, (3218), 2262 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3218 transitions. [2021-11-03 04:38:26,620 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3218 transitions. Word has length 50 [2021-11-03 04:38:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3218 transitions. [2021-11-03 04:38:26,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3218 transitions. [2021-11-03 04:38:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:38:26,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:26,622 INFO L513 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] [2021-11-03 04:38:26,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:26,835 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 04:38:26,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:26,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948336005] [2021-11-03 04:38:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:26,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:26,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:26,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:38:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:27,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:38:27,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:27,289 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 [2021-11-03 04:38:27,294 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 [2021-11-03 04:38:27,940 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:38:27,940 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 26 treesize of output 28 [2021-11-03 04:38:27,952 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:38:27,952 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 25 treesize of output 21 [2021-11-03 04:38:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:27,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:32,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:32,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948336005] [2021-11-03 04:38:32,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948336005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:32,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:32,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:38:32,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847166095] [2021-11-03 04:38:32,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:32,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:38:32,600 INFO L87 Difference]: Start difference. First operand 2263 states and 3218 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:52,953 INFO L93 Difference]: Finished difference Result 4001 states and 5509 transitions. [2021-11-03 04:38:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:38:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 53 [2021-11-03 04:38:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:52,965 INFO L225 Difference]: With dead ends: 4001 [2021-11-03 04:38:52,966 INFO L226 Difference]: Without dead ends: 4001 [2021-11-03 04:38:52,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:38:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-11-03 04:38:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2421. [2021-11-03 04:38:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1883 states have (on average 1.8608603292618162) internal successors, (3504), 2420 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3504 transitions. [2021-11-03 04:38:53,017 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3504 transitions. Word has length 53 [2021-11-03 04:38:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:53,018 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3504 transitions. [2021-11-03 04:38:53,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3504 transitions. [2021-11-03 04:38:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:38:53,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:53,019 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:38:53,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:38:53,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:38:53,243 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:38:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:38:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 04:38:53,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:38:53,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216738336] [2021-11-03 04:38:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:38:53,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:38:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:38:53,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:38:53,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:38:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:38:53,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:38:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:38:53,798 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 [2021-11-03 04:38:53,814 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 21 treesize of output 17 [2021-11-03 04:38:53,857 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 23 treesize of output 11 [2021-11-03 04:38:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:53,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:38:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:38:54,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:38:54,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216738336] [2021-11-03 04:38:54,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216738336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:38:54,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:38:54,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:38:54,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187959346] [2021-11-03 04:38:54,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:38:54,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:38:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:38:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:38:54,042 INFO L87 Difference]: Start difference. First operand 2421 states and 3504 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:38:59,827 INFO L93 Difference]: Finished difference Result 3353 states and 4702 transitions. [2021-11-03 04:38:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:38:59,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 04:38:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:38:59,833 INFO L225 Difference]: With dead ends: 3353 [2021-11-03 04:38:59,833 INFO L226 Difference]: Without dead ends: 3353 [2021-11-03 04:38:59,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:38:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2021-11-03 04:38:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2420. [2021-11-03 04:38:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1883 states have (on average 1.8597981943706852) internal successors, (3502), 2419 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3502 transitions. [2021-11-03 04:38:59,873 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3502 transitions. Word has length 59 [2021-11-03 04:38:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:38:59,873 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 3502 transitions. [2021-11-03 04:38:59,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:38:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3502 transitions. [2021-11-03 04:38:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:38:59,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:38:59,874 INFO L513 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] [2021-11-03 04:38:59,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:00,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:00,088 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:39:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 04:39:00,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:00,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964724013] [2021-11-03 04:39:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:00,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:00,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:00,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:00,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:39:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:00,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:39:00,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:00,626 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 [2021-11-03 04:39:00,655 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 [2021-11-03 04:39:00,664 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 [2021-11-03 04:39:00,720 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 [2021-11-03 04:39:00,723 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 [2021-11-03 04:39:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:00,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:01,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:01,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964724013] [2021-11-03 04:39:01,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964724013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:01,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:01,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:39:01,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003438739] [2021-11-03 04:39:01,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:39:01,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:39:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:39:01,184 INFO L87 Difference]: Start difference. First operand 2420 states and 3502 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:21,408 INFO L93 Difference]: Finished difference Result 3100 states and 4345 transitions. [2021-11-03 04:39:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:39:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2021-11-03 04:39:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:21,413 INFO L225 Difference]: With dead ends: 3100 [2021-11-03 04:39:21,413 INFO L226 Difference]: Without dead ends: 3100 [2021-11-03 04:39:21,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:39:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2021-11-03 04:39:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2419. [2021-11-03 04:39:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 1883 states have (on average 1.858736059479554) internal successors, (3500), 2418 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3500 transitions. [2021-11-03 04:39:21,466 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3500 transitions. Word has length 60 [2021-11-03 04:39:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:21,467 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3500 transitions. [2021-11-03 04:39:21,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3500 transitions. [2021-11-03 04:39:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:39:21,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:21,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:21,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:21,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:21,671 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:39:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 04:39:21,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:21,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819868148] [2021-11-03 04:39:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:21,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:21,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:21,680 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:21,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:39:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:22,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:22,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:22,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819868148] [2021-11-03 04:39:22,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819868148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:22,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:22,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:39:22,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493540054] [2021-11-03 04:39:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:39:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:39:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:39:22,426 INFO L87 Difference]: Start difference. First operand 2419 states and 3500 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:22,625 INFO L93 Difference]: Finished difference Result 3354 states and 4695 transitions. [2021-11-03 04:39:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:39:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 04:39:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:22,632 INFO L225 Difference]: With dead ends: 3354 [2021-11-03 04:39:22,632 INFO L226 Difference]: Without dead ends: 3354 [2021-11-03 04:39:22,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:39:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-11-03 04:39:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2437. [2021-11-03 04:39:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 1901 states have (on average 1.8506049447659128) internal successors, (3518), 2436 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3518 transitions. [2021-11-03 04:39:22,681 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3518 transitions. Word has length 64 [2021-11-03 04:39:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:22,681 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3518 transitions. [2021-11-03 04:39:22,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3518 transitions. [2021-11-03 04:39:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:39:22,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:22,682 INFO L513 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] [2021-11-03 04:39:22,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:22,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:22,897 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:39:22,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 04:39:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:22,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756697088] [2021-11-03 04:39:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:22,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:22,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:22,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:39:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:23,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:23,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:23,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:23,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756697088] [2021-11-03 04:39:23,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756697088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:23,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677028325] [2021-11-03 04:39:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:23,854 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:39:23,856 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:39:23,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:39:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:24,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:24,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:24,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:24,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677028325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:24,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437087126] [2021-11-03 04:39:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:24,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:24,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:24,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:39:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:39:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:25,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:25,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437087126] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:25,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:39:25,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:39:25,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415160526] [2021-11-03 04:39:25,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:39:25,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:25,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:39:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:39:25,797 INFO L87 Difference]: Start difference. First operand 2437 states and 3518 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 04:39:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:26,373 INFO L93 Difference]: Finished difference Result 3390 states and 4731 transitions. [2021-11-03 04:39:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:39:26,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 66 [2021-11-03 04:39:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:26,379 INFO L225 Difference]: With dead ends: 3390 [2021-11-03 04:39:26,379 INFO L226 Difference]: Without dead ends: 3390 [2021-11-03 04:39:26,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:39:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-11-03 04:39:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 2473. [2021-11-03 04:39:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1937 states have (on average 1.8347960764068147) internal successors, (3554), 2472 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3554 transitions. [2021-11-03 04:39:26,416 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3554 transitions. Word has length 66 [2021-11-03 04:39:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:26,416 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 3554 transitions. [2021-11-03 04:39:26,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 04:39:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3554 transitions. [2021-11-03 04:39:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:39:26,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:26,417 INFO L513 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] [2021-11-03 04:39:26,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 04:39:26,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:26,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:27,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:27,036 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:39:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 04:39:27,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:27,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429130253] [2021-11-03 04:39:27,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:39:27,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:27,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:27,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:27,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:39:27,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:39:27,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:27,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:39:27,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:28,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:28,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:28,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429130253] [2021-11-03 04:39:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429130253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:28,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673868598] [2021-11-03 04:39:28,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:39:28,509 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:28,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:39:28,518 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:39:28,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:39:29,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:39:29,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:29,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:39:29,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:30,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:30,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673868598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:30,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528208036] [2021-11-03 04:39:30,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:39:30,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:30,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:30,371 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:30,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:39:35,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:39:35,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:35,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:39:35,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:35,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:35,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528208036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:35,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:39:35,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 04:39:35,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18259633] [2021-11-03 04:39:35,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:39:35,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:39:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:39:35,957 INFO L87 Difference]: Start difference. First operand 2473 states and 3554 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:39,202 INFO L93 Difference]: Finished difference Result 3462 states and 4803 transitions. [2021-11-03 04:39:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 04:39:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 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 70 [2021-11-03 04:39:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:39,210 INFO L225 Difference]: With dead ends: 3462 [2021-11-03 04:39:39,210 INFO L226 Difference]: Without dead ends: 3462 [2021-11-03 04:39:39,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:39:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-11-03 04:39:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2545. [2021-11-03 04:39:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2009 states have (on average 1.8048780487804879) internal successors, (3626), 2544 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3626 transitions. [2021-11-03 04:39:39,249 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3626 transitions. Word has length 70 [2021-11-03 04:39:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:39,249 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 3626 transitions. [2021-11-03 04:39:39,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3626 transitions. [2021-11-03 04:39:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:39:39,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:39,250 INFO L513 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] [2021-11-03 04:39:39,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-03 04:39:39,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:39,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:39,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:39,861 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 04:39:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 04:39:39,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:39,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416982746] [2021-11-03 04:39:39,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:39:39,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:39,870 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:39,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:39:41,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:39:41,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:41,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:39:41,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:41,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:42,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416982746] [2021-11-03 04:39:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416982746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [683383680] [2021-11-03 04:39:42,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:39:42,911 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:42,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:39:42,912 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:39:42,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:39:49,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 04:39:49,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:39:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:49,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:49,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [683383680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:39:49,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174479040] [2021-11-03 04:39:49,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:39:49,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:39:49,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:49,678 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:39:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d108b3-7593-47df-9ddd-9f2180f8227e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process