./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V --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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:34:17,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:34:17,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:34:17,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:34:17,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:34:17,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:34:17,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:34:17,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:34:17,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:34:17,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:34:17,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:34:17,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:34:17,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:34:17,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:34:17,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:34:17,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:34:17,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:34:17,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:34:17,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:34:17,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:34:17,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:34:17,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:34:17,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:34:17,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:34:17,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:34:17,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:34:17,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:34:17,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:34:17,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:34:17,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:34:17,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:34:17,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:34:17,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:34:17,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:34:17,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:34:17,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:34:17,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:34:17,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:34:17,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:34:17,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:34:17,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:34:17,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:34:17,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:34:17,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:34:17,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:34:17,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:34:17,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:34:17,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:34:17,388 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:34:17,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:34:17,388 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:34:17,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:34:17,389 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:34:17,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:34:17,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:34:17,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:34:17,390 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:34:17,390 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:34:17,390 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:34:17,391 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:34:17,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:34:17,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:34:17,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:34:17,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:34:17,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:34:17,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:34:17,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:34:17,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:34:17,394 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:34:17,394 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:34:17,394 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:34:17,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:34:17,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:34:17,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:34:17,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:34:17,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:34:17,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:34:17,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:17,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:34:17,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:34:17,397 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:34:17,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:34:17,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:34:17,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:34:17,398 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_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2021-11-23 03:34:17,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:34:17,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:34:17,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:34:17,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:34:17,781 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:34:17,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-23 03:34:17,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/69995ef1c/f362b08ccd304a15a790e2c2379b732f/FLAG27b17210a [2021-11-23 03:34:18,805 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:34:18,806 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-23 03:34:18,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/69995ef1c/f362b08ccd304a15a790e2c2379b732f/FLAG27b17210a [2021-11-23 03:34:18,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/69995ef1c/f362b08ccd304a15a790e2c2379b732f [2021-11-23 03:34:18,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:34:18,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:34:18,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:18,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:34:18,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:34:18,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:18" (1/1) ... [2021-11-23 03:34:18,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760bb32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:18, skipping insertion in model container [2021-11-23 03:34:18,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:18" (1/1) ... [2021-11-23 03:34:18,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:34:19,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:19,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-23 03:34:19,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:20,013 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) [2021-11-23 03:34:20,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@455df295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:20, skipping insertion in model container [2021-11-23 03:34:20,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:20,014 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 03:34:20,017 INFO L158 Benchmark]: Toolchain (without parser) took 1072.47ms. Allocated memory is still 96.5MB. Free memory was 55.0MB in the beginning and 52.5MB in the end (delta: 2.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-11-23 03:34:20,023 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:34:20,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1069.26ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-11-23 03:34:20,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1069.26ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V --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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:34:22,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:34:22,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:34:22,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:34:22,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:34:22,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:34:22,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:34:22,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:34:22,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:34:22,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:34:22,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:34:22,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:34:22,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:34:22,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:34:22,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:34:22,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:34:22,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:34:22,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:34:22,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:34:23,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:34:23,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:34:23,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:34:23,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:34:23,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:34:23,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:34:23,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:34:23,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:34:23,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:34:23,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:34:23,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:34:23,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:34:23,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:34:23,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:34:23,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:34:23,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:34:23,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:34:23,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:34:23,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:34:23,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:34:23,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:34:23,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:34:23,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:34:23,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:34:23,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:34:23,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:34:23,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:34:23,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:34:23,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:34:23,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:34:23,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:34:23,120 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:34:23,120 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:34:23,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:34:23,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:34:23,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:34:23,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:34:23,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:34:23,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:34:23,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:34:23,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:34:23,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:34:23,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:34:23,127 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:34:23,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:34:23,128 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:34:23,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:34:23,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:34:23,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:34:23,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:34:23,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:34:23,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:34:23,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:34:23,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:34:23,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:34:23,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:23,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:34:23,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:34:23,134 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:34:23,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:34:23,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:34:23,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:34:23,135 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_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2021-11-23 03:34:23,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:34:23,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:34:23,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:34:23,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:34:23,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:34:23,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-23 03:34:23,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/19c06ba91/4d92d07d08664d089f3a69b22872902a/FLAGe824fdaa6 [2021-11-23 03:34:24,534 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:34:24,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2021-11-23 03:34:24,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/19c06ba91/4d92d07d08664d089f3a69b22872902a/FLAGe824fdaa6 [2021-11-23 03:34:24,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/data/19c06ba91/4d92d07d08664d089f3a69b22872902a [2021-11-23 03:34:24,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:34:24,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:34:24,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:24,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:34:24,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:34:24,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:24" (1/1) ... [2021-11-23 03:34:24,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d0e2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:24, skipping insertion in model container [2021-11-23 03:34:24,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:24" (1/1) ... [2021-11-23 03:34:24,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:34:24,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:25,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-23 03:34:26,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:26,043 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:34:26,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:26,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-23 03:34:26,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:26,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:34:26,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i[33022,33035] [2021-11-23 03:34:26,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:26,537 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:34:26,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26 WrapperNode [2021-11-23 03:34:26,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:26,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:26,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:34:26,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:34:26,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,766 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491 [2021-11-23 03:34:26,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:26,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:34:26,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:34:26,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:34:26,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:26,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:27,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:27,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:27,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:34:27,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:34:27,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:34:27,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:34:27,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (1/1) ... [2021-11-23 03:34:27,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:27,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:34:27,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:34:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 03:34:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-23 03:34:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-23 03:34:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 03:34:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:34:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:34:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:34:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:34:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:34:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:34:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:34:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:34:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:34:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:34:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:34:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 03:34:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:34:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:34:27,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:34:27,632 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:34:27,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:34:27,639 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:34:40,719 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:34:40,749 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:34:40,749 INFO L301 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-23 03:34:40,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:40 BoogieIcfgContainer [2021-11-23 03:34:40,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:34:40,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:34:40,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:34:40,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:34:40,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:34:24" (1/3) ... [2021-11-23 03:34:40,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d41340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:40, skipping insertion in model container [2021-11-23 03:34:40,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:26" (2/3) ... [2021-11-23 03:34:40,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d41340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:40, skipping insertion in model container [2021-11-23 03:34:40,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:40" (3/3) ... [2021-11-23 03:34:40,767 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-3.i [2021-11-23 03:34:40,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:34:40,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-23 03:34:40,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:34:40,843 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 [2021-11-23 03:34:40,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-23 03:34:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 03:34:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:34:40,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:40,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:34:40,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:34:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-23 03:34:40,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:40,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195388973] [2021-11-23 03:34:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:40,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:40,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:40,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:34:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:34:41,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:41,404 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 [2021-11-23 03:34:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:41,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:41,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195388973] [2021-11-23 03:34:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195388973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:41,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:41,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:34:41,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619286730] [2021-11-23 03:34:41,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:41,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:41,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:41,538 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:47,734 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions. [2021-11-23 03:34:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 03:34:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:47,779 INFO L225 Difference]: With dead ends: 3281 [2021-11-23 03:34:47,780 INFO L226 Difference]: Without dead ends: 3279 [2021-11-23 03:34:47,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:47,786 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:47,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 03:34:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-23 03:34:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579. [2021-11-23 03:34:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:34:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions. [2021-11-23 03:34:48,038 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3 [2021-11-23 03:34:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:48,038 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions. [2021-11-23 03:34:48,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:34:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions. [2021-11-23 03:34:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 03:34:48,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:48,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 03:34:48,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:48,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:34:48,260 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:34:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-23 03:34:48,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:48,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632016636] [2021-11-23 03:34:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:48,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:48,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:48,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:34:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:48,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:34:48,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:48,542 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 [2021-11-23 03:34:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:48,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:48,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:48,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632016636] [2021-11-23 03:34:48,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632016636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:48,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:48,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:34:48,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106886378] [2021-11-23 03:34:48,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:48,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:48,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:48,636 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:02,153 INFO L93 Difference]: Finished difference Result 4057 states and 4519 transitions. [2021-11-23 03:35:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 03:35:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:02,177 INFO L225 Difference]: With dead ends: 4057 [2021-11-23 03:35:02,177 INFO L226 Difference]: Without dead ends: 4057 [2021-11-23 03:35:02,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:02,179 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 3042 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:02,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3708 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-11-23 03:35:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-11-23 03:35:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 2743. [2021-11-23 03:35:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 1574 states have (on average 2.053367217280813) internal successors, (3232), 2727 states have internal predecessors, (3232), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3264 transitions. [2021-11-23 03:35:02,293 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3264 transitions. Word has length 3 [2021-11-23 03:35:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:02,294 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3264 transitions. [2021-11-23 03:35:02,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3264 transitions. [2021-11-23 03:35:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:35:02,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:02,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:02,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:02,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:02,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-23 03:35:02,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:02,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906182476] [2021-11-23 03:35:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:02,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:02,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:02,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:35:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:02,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:35:02,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:02,754 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 [2021-11-23 03:35:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:02,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:02,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906182476] [2021-11-23 03:35:02,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906182476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:02,798 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:02,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:35:02,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756684351] [2021-11-23 03:35:02,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:02,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:35:02,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:35:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:02,802 INFO L87 Difference]: Start difference. First operand 2743 states and 3264 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:07,218 INFO L93 Difference]: Finished difference Result 3481 states and 4002 transitions. [2021-11-23 03:35:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:35:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:07,240 INFO L225 Difference]: With dead ends: 3481 [2021-11-23 03:35:07,241 INFO L226 Difference]: Without dead ends: 3481 [2021-11-23 03:35:07,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:07,243 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1987 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:07,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3185 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 03:35:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-11-23 03:35:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2652. [2021-11-23 03:35:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1574 states have (on average 1.9739517153748412) internal successors, (3107), 2636 states have internal predecessors, (3107), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3139 transitions. [2021-11-23 03:35:07,342 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3139 transitions. Word has length 8 [2021-11-23 03:35:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:07,343 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3139 transitions. [2021-11-23 03:35:07,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3139 transitions. [2021-11-23 03:35:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:35:07,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:07,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:07,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:07,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:07,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-23 03:35:07,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354409084] [2021-11-23 03:35:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:07,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:07,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:35:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:07,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:07,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:07,788 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 [2021-11-23 03:35:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:07,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:07,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:07,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354409084] [2021-11-23 03:35:07,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354409084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:07,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:07,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 03:35:07,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507995855] [2021-11-23 03:35:07,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:07,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:07,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:07,941 INFO L87 Difference]: Start difference. First operand 2652 states and 3139 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:20,554 INFO L93 Difference]: Finished difference Result 3607 states and 4030 transitions. [2021-11-23 03:35:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:35:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:20,576 INFO L225 Difference]: With dead ends: 3607 [2021-11-23 03:35:20,576 INFO L226 Difference]: Without dead ends: 3607 [2021-11-23 03:35:20,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:20,578 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1441 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:20,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5029 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-11-23 03:35:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-11-23 03:35:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 2644. [2021-11-23 03:35:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1576 states have (on average 1.958756345177665) internal successors, (3087), 2628 states have internal predecessors, (3087), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3119 transitions. [2021-11-23 03:35:20,665 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3119 transitions. Word has length 8 [2021-11-23 03:35:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:20,666 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3119 transitions. [2021-11-23 03:35:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3119 transitions. [2021-11-23 03:35:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:35:20,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:20,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:20,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:20,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:20,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-23 03:35:20,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318019936] [2021-11-23 03:35:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:20,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:20,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:20,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:35:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:35:21,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:21,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:21,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:21,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318019936] [2021-11-23 03:35:21,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318019936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:21,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:21,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:35:21,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805622959] [2021-11-23 03:35:21,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:21,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:21,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:21,222 INFO L87 Difference]: Start difference. First operand 2644 states and 3119 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) [2021-11-23 03:35:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:21,305 INFO L93 Difference]: Finished difference Result 2602 states and 3076 transitions. [2021-11-23 03:35:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:21,306 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 [2021-11-23 03:35:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:21,324 INFO L225 Difference]: With dead ends: 2602 [2021-11-23 03:35:21,325 INFO L226 Difference]: Without dead ends: 2602 [2021-11-23 03:35:21,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:21,327 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 2384 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:21,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:35:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-23 03:35:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-11-23 03:35:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1558 states have (on average 1.9537869062901156) internal successors, (3044), 2586 states have internal predecessors, (3044), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3076 transitions. [2021-11-23 03:35:21,414 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3076 transitions. Word has length 11 [2021-11-23 03:35:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:21,415 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3076 transitions. [2021-11-23 03:35:21,415 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) [2021-11-23 03:35:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3076 transitions. [2021-11-23 03:35:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:35:21,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:21,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:21,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:21,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:21,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-23 03:35:21,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:21,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037602427] [2021-11-23 03:35:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:21,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:21,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:21,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:35:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:21,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:21,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:21,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037602427] [2021-11-23 03:35:21,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037602427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:21,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:21,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:35:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126341560] [2021-11-23 03:35:21,986 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:21,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:21,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:21,988 INFO L87 Difference]: Start difference. First operand 2602 states and 3076 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) [2021-11-23 03:35:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:22,162 INFO L93 Difference]: Finished difference Result 2581 states and 3048 transitions. [2021-11-23 03:35:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:22,163 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 [2021-11-23 03:35:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:22,181 INFO L225 Difference]: With dead ends: 2581 [2021-11-23 03:35:22,181 INFO L226 Difference]: Without dead ends: 2581 [2021-11-23 03:35:22,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:22,185 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 2316 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:22,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5905 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:35:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-23 03:35:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580. [2021-11-23 03:35:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1550 states have (on average 1.9451612903225806) internal successors, (3015), 2564 states have internal predecessors, (3015), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3047 transitions. [2021-11-23 03:35:22,257 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3047 transitions. Word has length 13 [2021-11-23 03:35:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:22,257 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3047 transitions. [2021-11-23 03:35:22,258 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) [2021-11-23 03:35:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3047 transitions. [2021-11-23 03:35:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:35:22,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:22,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:22,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 03:35:22,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:22,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-23 03:35:22,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:22,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573722249] [2021-11-23 03:35:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:22,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:22,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:22,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:22,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:35:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:22,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:35:22,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:22,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:22,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:22,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573722249] [2021-11-23 03:35:22,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573722249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:22,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:22,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:35:22,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949560228] [2021-11-23 03:35:22,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:22,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:22,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:22,803 INFO L87 Difference]: Start difference. First operand 2580 states and 3047 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:22,890 INFO L93 Difference]: Finished difference Result 4234 states and 4857 transitions. [2021-11-23 03:35:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 03:35:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:22,926 INFO L225 Difference]: With dead ends: 4234 [2021-11-23 03:35:22,926 INFO L226 Difference]: Without dead ends: 4234 [2021-11-23 03:35:22,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:22,928 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2277 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:22,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:35:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-23 03:35:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2538. [2021-11-23 03:35:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1532 states have (on average 1.9399477806788512) internal successors, (2972), 2522 states have internal predecessors, (2972), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3004 transitions. [2021-11-23 03:35:23,008 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3004 transitions. Word has length 20 [2021-11-23 03:35:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:23,009 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 3004 transitions. [2021-11-23 03:35:23,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3004 transitions. [2021-11-23 03:35:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:35:23,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:23,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:23,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:23,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:23,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-23 03:35:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:23,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199874567] [2021-11-23 03:35:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:23,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:23,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:23,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:23,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:35:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:23,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:35:23,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:23,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:23,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:23,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199874567] [2021-11-23 03:35:23,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199874567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:23,506 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:23,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:35:23,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174820892] [2021-11-23 03:35:23,506 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:23,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:23,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:23,507 INFO L87 Difference]: Start difference. First operand 2538 states and 3004 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:23,625 INFO L93 Difference]: Finished difference Result 4107 states and 4676 transitions. [2021-11-23 03:35:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 03:35:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:23,641 INFO L225 Difference]: With dead ends: 4107 [2021-11-23 03:35:23,641 INFO L226 Difference]: Without dead ends: 4107 [2021-11-23 03:35:23,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:23,642 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 4468 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:23,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 5521 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:35:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-23 03:35:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2460. [2021-11-23 03:35:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1478 states have (on average 1.9235453315290933) internal successors, (2843), 2444 states have internal predecessors, (2843), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 2875 transitions. [2021-11-23 03:35:23,710 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 2875 transitions. Word has length 20 [2021-11-23 03:35:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:23,710 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 2875 transitions. [2021-11-23 03:35:23,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 2875 transitions. [2021-11-23 03:35:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:35:23,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:23,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:23,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:23,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:23,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-23 03:35:23,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:23,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734816008] [2021-11-23 03:35:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:23,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:23,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:23,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:23,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:35:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:24,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:24,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:24,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:24,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734816008] [2021-11-23 03:35:24,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734816008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:24,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:24,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:35:24,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563418245] [2021-11-23 03:35:24,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:24,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:24,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:24,256 INFO L87 Difference]: Start difference. First operand 2460 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:24,435 INFO L93 Difference]: Finished difference Result 4093 states and 4657 transitions. [2021-11-23 03:35:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:24,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 03:35:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:24,463 INFO L225 Difference]: With dead ends: 4093 [2021-11-23 03:35:24,463 INFO L226 Difference]: Without dead ends: 4093 [2021-11-23 03:35:24,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:24,465 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4400 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:24,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9210 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:35:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-11-23 03:35:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2438. [2021-11-23 03:35:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1470 states have (on average 1.9142857142857144) internal successors, (2814), 2422 states have internal predecessors, (2814), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2846 transitions. [2021-11-23 03:35:24,541 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2846 transitions. Word has length 22 [2021-11-23 03:35:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:24,542 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 2846 transitions. [2021-11-23 03:35:24,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2846 transitions. [2021-11-23 03:35:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:35:24,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:24,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:24,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:24,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:24,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-23 03:35:24,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:24,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075901131] [2021-11-23 03:35:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:24,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:24,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:24,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:24,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:35:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:24,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:24,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:25,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:25,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:25,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075901131] [2021-11-23 03:35:25,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075901131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:25,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:25,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:35:25,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513643307] [2021-11-23 03:35:25,116 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:25,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:35:25,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:35:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:25,120 INFO L87 Difference]: Start difference. First operand 2438 states and 2846 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:25,275 INFO L93 Difference]: Finished difference Result 4028 states and 4534 transitions. [2021-11-23 03:35:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:25,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 03:35:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:25,295 INFO L225 Difference]: With dead ends: 4028 [2021-11-23 03:35:25,296 INFO L226 Difference]: Without dead ends: 4028 [2021-11-23 03:35:25,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:25,297 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 2170 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:25,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 11179 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:35:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-23 03:35:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2400. [2021-11-23 03:35:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1446 states have (on average 1.8858921161825726) internal successors, (2727), 2384 states have internal predecessors, (2727), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-23 03:35:25,397 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 22 [2021-11-23 03:35:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:25,397 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-23 03:35:25,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-23 03:35:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:35:25,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:25,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:25,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:25,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:25,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-23 03:35:25,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064063] [2021-11-23 03:35:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:25,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:25,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:35:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:25,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:25,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:25,840 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 [2021-11-23 03:35:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:25,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:26,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:26,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064063] [2021-11-23 03:35:26,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:26,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:26,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:35:26,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089401156] [2021-11-23 03:35:26,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:26,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:26,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:26,058 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 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) [2021-11-23 03:35:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:31,498 INFO L93 Difference]: Finished difference Result 3021 states and 3299 transitions. [2021-11-23 03:35:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:31,498 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 [2021-11-23 03:35:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:31,509 INFO L225 Difference]: With dead ends: 3021 [2021-11-23 03:35:31,509 INFO L226 Difference]: Without dead ends: 3021 [2021-11-23 03:35:31,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:31,511 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 3081 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:31,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2791 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 03:35:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-23 03:35:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2396. [2021-11-23 03:35:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1446 states have (on average 1.8831258644536653) internal successors, (2723), 2380 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2755 transitions. [2021-11-23 03:35:31,567 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2755 transitions. Word has length 27 [2021-11-23 03:35:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:31,568 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 2755 transitions. [2021-11-23 03:35:31,568 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) [2021-11-23 03:35:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2755 transitions. [2021-11-23 03:35:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:35:31,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:31,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:31,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:31,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:31,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-23 03:35:31,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602704664] [2021-11-23 03:35:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:31,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:31,787 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:35:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:32,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:35:32,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:32,040 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 [2021-11-23 03:35:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:32,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:32,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:32,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602704664] [2021-11-23 03:35:32,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602704664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:32,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:32,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:35:32,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701837003] [2021-11-23 03:35:32,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:32,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:35:32,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:35:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:32,644 INFO L87 Difference]: Start difference. First operand 2396 states and 2755 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:48,544 INFO L93 Difference]: Finished difference Result 3571 states and 3924 transitions. [2021-11-23 03:35:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:35:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 03:35:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:48,553 INFO L225 Difference]: With dead ends: 3571 [2021-11-23 03:35:48,553 INFO L226 Difference]: Without dead ends: 3571 [2021-11-23 03:35:48,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:35:48,555 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 6054 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:48,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6054 Valid, 4341 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2021-11-23 03:35:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-23 03:35:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2429. [2021-11-23 03:35:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1480 states have (on average 1.864864864864865) internal successors, (2760), 2413 states have internal predecessors, (2760), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2792 transitions. [2021-11-23 03:35:48,597 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2792 transitions. Word has length 27 [2021-11-23 03:35:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:48,597 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 2792 transitions. [2021-11-23 03:35:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2792 transitions. [2021-11-23 03:35:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:35:48,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:48,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:48,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-23 03:35:48,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:48,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:48,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-23 03:35:48,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:48,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758221828] [2021-11-23 03:35:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:48,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:48,813 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:48,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:35:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:35:49,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:49,073 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 [2021-11-23 03:35:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:49,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:49,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758221828] [2021-11-23 03:35:49,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758221828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:49,316 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:49,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:35:49,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846876948] [2021-11-23 03:35:49,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:49,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:49,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:49,318 INFO L87 Difference]: Start difference. First operand 2429 states and 2792 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:57,093 INFO L93 Difference]: Finished difference Result 4682 states and 5248 transitions. [2021-11-23 03:35:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:35:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 03:35:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:57,103 INFO L225 Difference]: With dead ends: 4682 [2021-11-23 03:35:57,103 INFO L226 Difference]: Without dead ends: 4682 [2021-11-23 03:35:57,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:57,105 INFO L933 BasicCegarLoop]: 2684 mSDtfsCounter, 4263 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:57,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 5056 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:35:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-23 03:35:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2425. [2021-11-23 03:35:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1480 states have (on average 1.8621621621621622) internal successors, (2756), 2409 states have internal predecessors, (2756), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:35:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2788 transitions. [2021-11-23 03:35:57,162 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2788 transitions. Word has length 36 [2021-11-23 03:35:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:57,163 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2788 transitions. [2021-11-23 03:35:57,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:35:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2788 transitions. [2021-11-23 03:35:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:35:57,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:57,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:57,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:57,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:57,377 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:35:57,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-23 03:35:57,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236525515] [2021-11-23 03:35:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:57,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:57,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:57,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:57,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:35:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:57,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:35:57,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:57,720 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 [2021-11-23 03:35:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:58,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:35:58,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:58,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236525515] [2021-11-23 03:35:58,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236525515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:58,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:58,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:35:58,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032143426] [2021-11-23 03:35:58,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:58,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:35:58,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:35:58,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:58,562 INFO L87 Difference]: Start difference. First operand 2425 states and 2788 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:19,069 INFO L93 Difference]: Finished difference Result 4594 states and 5036 transitions. [2021-11-23 03:36:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:36:19,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 03:36:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:19,077 INFO L225 Difference]: With dead ends: 4594 [2021-11-23 03:36:19,077 INFO L226 Difference]: Without dead ends: 4594 [2021-11-23 03:36:19,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:36:19,078 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 4252 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:19,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 7476 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2021-11-23 03:36:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-11-23 03:36:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2421. [2021-11-23 03:36:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1480 states have (on average 1.8594594594594596) internal successors, (2752), 2405 states have internal predecessors, (2752), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:36:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2784 transitions. [2021-11-23 03:36:19,133 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2784 transitions. Word has length 36 [2021-11-23 03:36:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:19,133 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 2784 transitions. [2021-11-23 03:36:19,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2784 transitions. [2021-11-23 03:36:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:36:19,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:19,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:19,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-23 03:36:19,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:19,348 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:36:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-23 03:36:19,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:19,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292106979] [2021-11-23 03:36:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:19,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:19,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:19,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:19,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:36:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:19,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:19,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:19,618 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 [2021-11-23 03:36:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:19,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:19,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292106979] [2021-11-23 03:36:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292106979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:19,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:19,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:36:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757179565] [2021-11-23 03:36:19,870 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:19,871 INFO L87 Difference]: Start difference. First operand 2421 states and 2784 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:28,273 INFO L93 Difference]: Finished difference Result 5038 states and 5620 transitions. [2021-11-23 03:36:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:36:28,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 03:36:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:28,280 INFO L225 Difference]: With dead ends: 5038 [2021-11-23 03:36:28,281 INFO L226 Difference]: Without dead ends: 5038 [2021-11-23 03:36:28,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:28,282 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 4829 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:28,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 5082 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:36:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2021-11-23 03:36:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2418. [2021-11-23 03:36:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.852027027027027) internal successors, (2741), 2402 states have internal predecessors, (2741), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:36:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2773 transitions. [2021-11-23 03:36:28,333 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2773 transitions. Word has length 36 [2021-11-23 03:36:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:28,334 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2773 transitions. [2021-11-23 03:36:28,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2773 transitions. [2021-11-23 03:36:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:36:28,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:28,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:28,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:28,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:28,549 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:36:28,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-23 03:36:28,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:28,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658474344] [2021-11-23 03:36:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:28,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:28,552 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:28,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:36:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:28,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:36:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:28,783 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 [2021-11-23 03:36:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:29,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:29,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:29,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658474344] [2021-11-23 03:36:29,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658474344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:29,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:29,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:36:29,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787510571] [2021-11-23 03:36:29,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:29,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:36:29,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:36:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:36:29,532 INFO L87 Difference]: Start difference. First operand 2418 states and 2773 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:56,875 INFO L93 Difference]: Finished difference Result 5170 states and 5700 transitions. [2021-11-23 03:36:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:36:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 03:36:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:56,883 INFO L225 Difference]: With dead ends: 5170 [2021-11-23 03:36:56,884 INFO L226 Difference]: Without dead ends: 5170 [2021-11-23 03:36:56,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:36:56,885 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 5159 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:56,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 7751 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time] [2021-11-23 03:36:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-11-23 03:36:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 2418. [2021-11-23 03:36:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.8493243243243243) internal successors, (2737), 2402 states have internal predecessors, (2737), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:36:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2769 transitions. [2021-11-23 03:36:56,938 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2769 transitions. Word has length 36 [2021-11-23 03:36:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:56,939 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2769 transitions. [2021-11-23 03:36:56,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2769 transitions. [2021-11-23 03:36:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:36:56,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:56,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:56,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:57,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:57,155 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:36:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-23 03:36:57,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639047775] [2021-11-23 03:36:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:57,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:57,158 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:57,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:36:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:57,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:57,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:57,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:57,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:57,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639047775] [2021-11-23 03:36:57,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639047775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:57,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:57,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:36:57,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905578526] [2021-11-23 03:36:57,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:57,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:57,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:57,601 INFO L87 Difference]: Start difference. First operand 2418 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:57,675 INFO L93 Difference]: Finished difference Result 2412 states and 2755 transitions. [2021-11-23 03:36:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:36:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-23 03:36:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:57,678 INFO L225 Difference]: With dead ends: 2412 [2021-11-23 03:36:57,679 INFO L226 Difference]: Without dead ends: 2412 [2021-11-23 03:36:57,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:57,680 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1145 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:57,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:36:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-23 03:36:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-23 03:36:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1474 states have (on average 1.8473541383989145) internal successors, (2723), 2396 states have internal predecessors, (2723), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 03:36:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2755 transitions. [2021-11-23 03:36:57,718 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2755 transitions. Word has length 40 [2021-11-23 03:36:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:57,719 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 2755 transitions. [2021-11-23 03:36:57,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2755 transitions. [2021-11-23 03:36:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:36:57,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:57,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:57,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:57,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:57,933 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:36:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-23 03:36:57,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038436788] [2021-11-23 03:36:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:57,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:57,936 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:57,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:36:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:58,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:58,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:58,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:58,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:58,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038436788] [2021-11-23 03:36:58,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038436788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:58,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:58,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:36:58,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391306588] [2021-11-23 03:36:58,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:58,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:58,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:58,822 INFO L87 Difference]: Start difference. First operand 2412 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:59,194 INFO L93 Difference]: Finished difference Result 3930 states and 4407 transitions. [2021-11-23 03:36:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-23 03:36:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:59,200 INFO L225 Difference]: With dead ends: 3930 [2021-11-23 03:36:59,200 INFO L226 Difference]: Without dead ends: 3930 [2021-11-23 03:36:59,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:59,201 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1564 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:59,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:36:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-11-23 03:36:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3131. [2021-11-23 03:36:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2189 states have (on average 1.814070351758794) internal successors, (3971), 3108 states have internal predecessors, (3971), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:36:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4017 transitions. [2021-11-23 03:36:59,262 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4017 transitions. Word has length 48 [2021-11-23 03:36:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:59,262 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4017 transitions. [2021-11-23 03:36:59,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:36:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4017 transitions. [2021-11-23 03:36:59,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 03:36:59,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:59,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:59,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:59,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:59,479 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:36:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-23 03:36:59,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:59,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756551475] [2021-11-23 03:36:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:59,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:59,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:59,483 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:59,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:36:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:59,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:59,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:59,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:36:59,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756551475] [2021-11-23 03:36:59,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756551475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:59,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:59,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:36:59,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897730678] [2021-11-23 03:36:59,980 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:59,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:59,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:59,982 INFO L87 Difference]: Start difference. First operand 3131 states and 4017 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:00,084 INFO L93 Difference]: Finished difference Result 4459 states and 5419 transitions. [2021-11-23 03:37:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:00,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 03:37:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:00,090 INFO L225 Difference]: With dead ends: 4459 [2021-11-23 03:37:00,090 INFO L226 Difference]: Without dead ends: 4459 [2021-11-23 03:37:00,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:00,091 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 2139 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8767 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:00,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8767 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:37:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2021-11-23 03:37:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3107. [2021-11-23 03:37:00,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2165 states have (on average 1.8157043879907622) internal successors, (3931), 3084 states have internal predecessors, (3931), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:37:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3977 transitions. [2021-11-23 03:37:00,155 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3977 transitions. Word has length 51 [2021-11-23 03:37:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:00,155 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 3977 transitions. [2021-11-23 03:37:00,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3977 transitions. [2021-11-23 03:37:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:37:00,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:00,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:00,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:00,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:00,374 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-23 03:37:00,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:00,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873016522] [2021-11-23 03:37:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:00,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:00,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:00,376 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:00,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:37:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:00,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:00,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:00,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:00,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:00,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873016522] [2021-11-23 03:37:00,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873016522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:00,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:00,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:37:00,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454835026] [2021-11-23 03:37:00,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:00,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:00,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:00,928 INFO L87 Difference]: Start difference. First operand 3107 states and 3977 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:01,014 INFO L93 Difference]: Finished difference Result 4204 states and 4917 transitions. [2021-11-23 03:37:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:01,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-23 03:37:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:01,019 INFO L225 Difference]: With dead ends: 4204 [2021-11-23 03:37:01,020 INFO L226 Difference]: Without dead ends: 4204 [2021-11-23 03:37:01,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:01,021 INFO L933 BasicCegarLoop]: 3683 mSDtfsCounter, 2130 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:01,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8899 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:37:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-23 03:37:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3095. [2021-11-23 03:37:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2153 states have (on average 1.8165350673478866) internal successors, (3911), 3072 states have internal predecessors, (3911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:37:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3957 transitions. [2021-11-23 03:37:01,096 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3957 transitions. Word has length 54 [2021-11-23 03:37:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:01,096 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3957 transitions. [2021-11-23 03:37:01,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3957 transitions. [2021-11-23 03:37:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 03:37:01,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:01,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:01,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:01,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:01,319 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -345082942, now seen corresponding path program 1 times [2021-11-23 03:37:01,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322872690] [2021-11-23 03:37:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:01,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:01,322 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:01,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:37:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:01,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:37:01,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:37:01,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:37:01,672 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 03:37:01,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 03:37:01,747 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 03:37:01,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 03:37:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:01,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:02,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:02,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322872690] [2021-11-23 03:37:02,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322872690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:02,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:02,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:37:02,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028104786] [2021-11-23 03:37:02,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:02,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:37:02,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:37:02,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:37:02,031 INFO L87 Difference]: Start difference. First operand 3095 states and 3957 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:05,665 INFO L93 Difference]: Finished difference Result 3323 states and 4196 transitions. [2021-11-23 03:37:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:37:05,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 03:37:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:05,669 INFO L225 Difference]: With dead ends: 3323 [2021-11-23 03:37:05,669 INFO L226 Difference]: Without dead ends: 3323 [2021-11-23 03:37:05,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:37:05,670 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1027 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:05,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 7241 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-23 03:37:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-11-23 03:37:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3061. [2021-11-23 03:37:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2119 states have (on average 1.8291647003303444) internal successors, (3876), 3038 states have internal predecessors, (3876), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 03:37:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3922 transitions. [2021-11-23 03:37:05,719 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3922 transitions. Word has length 57 [2021-11-23 03:37:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:05,719 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 3922 transitions. [2021-11-23 03:37:05,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3922 transitions. [2021-11-23 03:37:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:37:05,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:05,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:05,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:05,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:05,935 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:05,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-23 03:37:05,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:05,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267117293] [2021-11-23 03:37:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:05,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:05,938 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:05,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 03:37:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:06,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:06,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:07,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267117293] [2021-11-23 03:37:07,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267117293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:07,069 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:07,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:37:07,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511288568] [2021-11-23 03:37:07,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:07,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:07,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:07,071 INFO L87 Difference]: Start difference. First operand 3061 states and 3922 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:07,271 INFO L93 Difference]: Finished difference Result 4503 states and 5557 transitions. [2021-11-23 03:37:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-23 03:37:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:07,281 INFO L225 Difference]: With dead ends: 4503 [2021-11-23 03:37:07,281 INFO L226 Difference]: Without dead ends: 4503 [2021-11-23 03:37:07,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:07,282 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 1262 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:07,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4860 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:37:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-11-23 03:37:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3784. [2021-11-23 03:37:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2838 states have (on average 1.7924594785059902) internal successors, (5087), 3754 states have internal predecessors, (5087), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5147 transitions. [2021-11-23 03:37:07,354 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5147 transitions. Word has length 59 [2021-11-23 03:37:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:07,355 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5147 transitions. [2021-11-23 03:37:07,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5147 transitions. [2021-11-23 03:37:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:37:07,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:07,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:07,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:07,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:07,577 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-23 03:37:07,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:07,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452049073] [2021-11-23 03:37:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:07,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:07,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:07,580 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:07,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:37:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:07,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:37:07,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:08,022 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 [2021-11-23 03:37:08,029 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 [2021-11-23 03:37:08,634 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:37:08,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 03:37:08,639 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:37:08,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 03:37:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:08,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:13,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:13,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452049073] [2021-11-23 03:37:13,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452049073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:13,582 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:13,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:37:13,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639790012] [2021-11-23 03:37:13,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:13,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:37:13,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:37:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:37:13,584 INFO L87 Difference]: Start difference. First operand 3784 states and 5147 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:23,569 INFO L93 Difference]: Finished difference Result 5542 states and 7453 transitions. [2021-11-23 03:37:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:37:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 03:37:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:23,580 INFO L225 Difference]: With dead ends: 5542 [2021-11-23 03:37:23,581 INFO L226 Difference]: Without dead ends: 5542 [2021-11-23 03:37:23,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:37:23,582 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2433 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2792 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:23,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5116 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1638 Invalid, 0 Unknown, 2792 Unchecked, 9.9s Time] [2021-11-23 03:37:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-11-23 03:37:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 3754. [2021-11-23 03:37:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2840 states have (on average 1.7693661971830985) internal successors, (5025), 3724 states have internal predecessors, (5025), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5085 transitions. [2021-11-23 03:37:23,682 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5085 transitions. Word has length 62 [2021-11-23 03:37:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:23,683 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5085 transitions. [2021-11-23 03:37:23,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5085 transitions. [2021-11-23 03:37:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:37:23,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:23,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:23,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:23,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:23,905 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-23 03:37:23,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:23,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520886169] [2021-11-23 03:37:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:23,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:23,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:23,907 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:23,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 03:37:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:24,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:37:24,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:24,283 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 [2021-11-23 03:37:24,292 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 [2021-11-23 03:37:25,143 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 03:37:25,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 03:37:25,150 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:37:25,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 03:37:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:25,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:30,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:30,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520886169] [2021-11-23 03:37:30,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520886169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:30,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:30,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:37:30,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892050986] [2021-11-23 03:37:30,251 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:30,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:37:30,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:37:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:37:30,253 INFO L87 Difference]: Start difference. First operand 3754 states and 5085 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:36,878 INFO L93 Difference]: Finished difference Result 3808 states and 5065 transitions. [2021-11-23 03:37:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:37:36,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 03:37:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:36,884 INFO L225 Difference]: With dead ends: 3808 [2021-11-23 03:37:36,884 INFO L226 Difference]: Without dead ends: 3808 [2021-11-23 03:37:36,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 03:37:36,886 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:36,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3582 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1052 Invalid, 0 Unknown, 1531 Unchecked, 6.6s Time] [2021-11-23 03:37:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2021-11-23 03:37:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3770. [2021-11-23 03:37:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2887 states have (on average 1.7322480083131278) internal successors, (5001), 3740 states have internal predecessors, (5001), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5061 transitions. [2021-11-23 03:37:36,937 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5061 transitions. Word has length 62 [2021-11-23 03:37:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:36,938 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5061 transitions. [2021-11-23 03:37:36,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5061 transitions. [2021-11-23 03:37:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:37:36,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:36,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:36,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:37,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:37,154 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-23 03:37:37,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:37,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316271907] [2021-11-23 03:37:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:37,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:37,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:37,158 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:37,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 03:37:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:37,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:37,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:37:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:38,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:38,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316271907] [2021-11-23 03:37:38,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316271907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:38,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:38,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:37:38,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411204997] [2021-11-23 03:37:38,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:38,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:37:38,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:37:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:37:38,183 INFO L87 Difference]: Start difference. First operand 3770 states and 5061 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:41,730 INFO L93 Difference]: Finished difference Result 3768 states and 5057 transitions. [2021-11-23 03:37:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 03:37:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:41,739 INFO L225 Difference]: With dead ends: 3768 [2021-11-23 03:37:41,739 INFO L226 Difference]: Without dead ends: 3768 [2021-11-23 03:37:41,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:37:41,740 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 6498 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:41,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 1801 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:37:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-23 03:37:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768. [2021-11-23 03:37:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2887 states have (on average 1.7308624870107379) internal successors, (4997), 3738 states have internal predecessors, (4997), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5057 transitions. [2021-11-23 03:37:41,799 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5057 transitions. Word has length 64 [2021-11-23 03:37:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:41,799 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 5057 transitions. [2021-11-23 03:37:41,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5057 transitions. [2021-11-23 03:37:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:37:41,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:41,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:41,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:42,016 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-23 03:37:42,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148344212] [2021-11-23 03:37:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:42,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:42,020 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:42,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 03:37:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:42,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:42,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:42,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:42,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 03:37:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:43,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:43,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148344212] [2021-11-23 03:37:43,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148344212] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:43,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:43,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 03:37:43,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523109417] [2021-11-23 03:37:43,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:43,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:37:43,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:37:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:37:43,090 INFO L87 Difference]: Start difference. First operand 3768 states and 5057 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:48,955 INFO L93 Difference]: Finished difference Result 3767 states and 5043 transitions. [2021-11-23 03:37:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:48,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 03:37:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:48,961 INFO L225 Difference]: With dead ends: 3767 [2021-11-23 03:37:48,961 INFO L226 Difference]: Without dead ends: 3767 [2021-11-23 03:37:48,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:37:48,962 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1673 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 3052 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 03:37:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-23 03:37:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3715. [2021-11-23 03:37:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2840 states have (on average 1.7376760563380282) internal successors, (4935), 3685 states have internal predecessors, (4935), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4995 transitions. [2021-11-23 03:37:49,015 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4995 transitions. Word has length 64 [2021-11-23 03:37:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4995 transitions. [2021-11-23 03:37:49,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4995 transitions. [2021-11-23 03:37:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:37:49,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:49,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:49,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:49,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:49,219 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-23 03:37:49,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128131436] [2021-11-23 03:37:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:49,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:49,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:49,221 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:49,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 03:37:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:49,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:37:49,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:49,546 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 [2021-11-23 03:37:49,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 03:37:49,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:37:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:49,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:49,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128131436] [2021-11-23 03:37:49,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128131436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:49,718 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:49,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:37:49,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727040066] [2021-11-23 03:37:49,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:49,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:37:49,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:37:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:49,719 INFO L87 Difference]: Start difference. First operand 3715 states and 4995 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:56,388 INFO L93 Difference]: Finished difference Result 3714 states and 4993 transitions. [2021-11-23 03:37:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:37:56,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 03:37:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:56,392 INFO L225 Difference]: With dead ends: 3714 [2021-11-23 03:37:56,393 INFO L226 Difference]: Without dead ends: 3714 [2021-11-23 03:37:56,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:37:56,393 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 4 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:56,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5561 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:37:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-23 03:37:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2021-11-23 03:37:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 2840 states have (on average 1.7369718309859155) internal successors, (4933), 3684 states have internal predecessors, (4933), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:37:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4993 transitions. [2021-11-23 03:37:56,432 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4993 transitions. Word has length 67 [2021-11-23 03:37:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:56,432 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4993 transitions. [2021-11-23 03:37:56,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:37:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4993 transitions. [2021-11-23 03:37:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:37:56,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:56,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:56,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:56,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:56,634 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:37:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-23 03:37:56,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112279396] [2021-11-23 03:37:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:56,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:56,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:56,636 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:56,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 03:37:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:56,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:37:56,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:56,967 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 [2021-11-23 03:37:56,990 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 [2021-11-23 03:37:57,001 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 [2021-11-23 03:37:57,092 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 [2021-11-23 03:37:57,096 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 [2021-11-23 03:37:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:57,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:37:57,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:57,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112279396] [2021-11-23 03:37:57,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112279396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:57,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:57,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 03:37:57,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157303397] [2021-11-23 03:37:57,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:57,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:37:57,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:37:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:37:57,482 INFO L87 Difference]: Start difference. First operand 3714 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:18,911 INFO L93 Difference]: Finished difference Result 3713 states and 4991 transitions. [2021-11-23 03:38:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:38:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 03:38:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:18,918 INFO L225 Difference]: With dead ends: 3713 [2021-11-23 03:38:18,919 INFO L226 Difference]: Without dead ends: 3713 [2021-11-23 03:38:18,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:38:18,920 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 3 mSDsluCounter, 5779 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:18,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7892 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2021-11-23 03:38:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-11-23 03:38:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2021-11-23 03:38:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2838 states have (on average 1.7374911909795632) internal successors, (4931), 3683 states have internal predecessors, (4931), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:38:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4991 transitions. [2021-11-23 03:38:18,969 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4991 transitions. Word has length 67 [2021-11-23 03:38:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:18,969 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4991 transitions. [2021-11-23 03:38:18,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4991 transitions. [2021-11-23 03:38:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:38:18,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:18,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:18,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:19,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:19,190 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:38:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-23 03:38:19,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:19,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986168712] [2021-11-23 03:38:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:19,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:19,193 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:19,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 03:38:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:38:19,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:19,540 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 [2021-11-23 03:38:19,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 03:38:19,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:38:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:19,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:19,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986168712] [2021-11-23 03:38:19,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986168712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:19,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:19,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:38:19,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721472833] [2021-11-23 03:38:19,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:19,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:38:19,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:19,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:38:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:19,690 INFO L87 Difference]: Start difference. First operand 3713 states and 4991 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:26,402 INFO L93 Difference]: Finished difference Result 3712 states and 4988 transitions. [2021-11-23 03:38:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:38:26,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 03:38:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:26,408 INFO L225 Difference]: With dead ends: 3712 [2021-11-23 03:38:26,408 INFO L226 Difference]: Without dead ends: 3712 [2021-11-23 03:38:26,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:38:26,409 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:26,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5556 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:38:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-11-23 03:38:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3712. [2021-11-23 03:38:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2838 states have (on average 1.7364341085271318) internal successors, (4928), 3682 states have internal predecessors, (4928), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:38:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4988 transitions. [2021-11-23 03:38:26,462 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4988 transitions. Word has length 67 [2021-11-23 03:38:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:26,462 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4988 transitions. [2021-11-23 03:38:26,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4988 transitions. [2021-11-23 03:38:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:38:26,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:26,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:26,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:26,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:26,679 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:38:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:26,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-23 03:38:26,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:26,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355786060] [2021-11-23 03:38:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:26,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:26,681 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:26,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 03:38:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:38:26,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:27,050 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 [2021-11-23 03:38:27,080 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 [2021-11-23 03:38:27,091 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 [2021-11-23 03:38:27,167 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 [2021-11-23 03:38:27,172 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 [2021-11-23 03:38:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:27,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:27,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:27,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355786060] [2021-11-23 03:38:27,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355786060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:27,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:27,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 03:38:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815302608] [2021-11-23 03:38:27,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:27,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:38:27,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:38:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:38:27,614 INFO L87 Difference]: Start difference. First operand 3712 states and 4988 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:46,460 INFO L93 Difference]: Finished difference Result 3711 states and 4985 transitions. [2021-11-23 03:38:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:38:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 03:38:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:46,469 INFO L225 Difference]: With dead ends: 3711 [2021-11-23 03:38:46,469 INFO L226 Difference]: Without dead ends: 3711 [2021-11-23 03:38:46,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:38:46,470 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:46,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5567 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2021-11-23 03:38:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-11-23 03:38:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3711. [2021-11-23 03:38:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2835 states have (on average 1.7372134038800706) internal successors, (4925), 3681 states have internal predecessors, (4925), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-23 03:38:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4985 transitions. [2021-11-23 03:38:46,528 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4985 transitions. Word has length 67 [2021-11-23 03:38:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 4985 transitions. [2021-11-23 03:38:46,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:38:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4985 transitions. [2021-11-23 03:38:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 03:38:46,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:46,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:46,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:46,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:46,747 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:38:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1243544783, now seen corresponding path program 1 times [2021-11-23 03:38:46,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:46,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775353169] [2021-11-23 03:38:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:46,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:46,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:46,751 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:46,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 03:38:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:47,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:47,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:47,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:47,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775353169] [2021-11-23 03:38:47,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775353169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:47,375 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:47,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:38:47,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617991420] [2021-11-23 03:38:47,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:47,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:38:47,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:38:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:38:47,377 INFO L87 Difference]: Start difference. First operand 3711 states and 4985 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:38:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:47,534 INFO L93 Difference]: Finished difference Result 3721 states and 5001 transitions. [2021-11-23 03:38:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:38:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-23 03:38:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:47,543 INFO L225 Difference]: With dead ends: 3721 [2021-11-23 03:38:47,543 INFO L226 Difference]: Without dead ends: 3721 [2021-11-23 03:38:47,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:38:47,544 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 9 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:47,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6320 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-11-23 03:38:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2021-11-23 03:38:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2843 states have (on average 1.736545902215969) internal successors, (4937), 3690 states have internal predecessors, (4937), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-23 03:38:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5001 transitions. [2021-11-23 03:38:47,611 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5001 transitions. Word has length 75 [2021-11-23 03:38:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:47,630 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5001 transitions. [2021-11-23 03:38:47,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:38:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5001 transitions. [2021-11-23 03:38:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 03:38:47,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:47,632 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:47,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:47,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:47,845 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:38:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 520759535, now seen corresponding path program 1 times [2021-11-23 03:38:47,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918784418] [2021-11-23 03:38:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:47,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:47,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:47,847 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:47,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 03:38:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:48,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:38:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:48,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:48,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:48,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918784418] [2021-11-23 03:38:48,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918784418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803063781] [2021-11-23 03:38:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:48,701 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:38:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:38:48,703 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:38:48,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-23 03:38:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:49,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:38:49,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:49,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:49,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803063781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:49,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954429016] [2021-11-23 03:38:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:49,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:49,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:49,440 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:49,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-23 03:38:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:49,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:38:49,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:49,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:50,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954429016] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:50,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:38:50,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 03:38:50,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063760696] [2021-11-23 03:38:50,147 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:38:50,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:38:50,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:38:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:38:50,148 INFO L87 Difference]: Start difference. First operand 3721 states and 5001 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:38:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:50,839 INFO L93 Difference]: Finished difference Result 3735 states and 5021 transitions. [2021-11-23 03:38:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:38:50,846 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-23 03:38:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:50,856 INFO L225 Difference]: With dead ends: 3735 [2021-11-23 03:38:50,857 INFO L226 Difference]: Without dead ends: 3729 [2021-11-23 03:38:50,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:38:50,858 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 56 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:50,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8428 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:38:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-23 03:38:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3727. [2021-11-23 03:38:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2849 states have (on average 1.7353457353457353) internal successors, (4944), 3696 states have internal predecessors, (4944), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-23 03:38:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5008 transitions. [2021-11-23 03:38:50,923 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5008 transitions. Word has length 77 [2021-11-23 03:38:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:50,924 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5008 transitions. [2021-11-23 03:38:50,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:38:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5008 transitions. [2021-11-23 03:38:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:38:50,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:50,926 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:50,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:51,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:51,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:51,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:51,547 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-23 03:38:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash 991095087, now seen corresponding path program 2 times [2021-11-23 03:38:51,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:51,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516048389] [2021-11-23 03:38:51,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:38:51,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:51,550 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:51,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 03:38:52,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:38:52,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:38:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:38:52,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:52,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:52,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:52,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516048389] [2021-11-23 03:38:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516048389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:52,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268528988] [2021-11-23 03:38:52,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:38:52,917 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:38:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:38:52,918 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:38:52,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-23 03:38:53,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:38:53,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:38:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:38:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:54,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:38:54,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268528988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:54,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011831212] [2021-11-23 03:38:54,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:38:54,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:54,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:54,313 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:54,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fce5c8e-1e8d-4745-b862-667f0908a42e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-23 03:39:11,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:39:11,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:39:11,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 03:39:11,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:39:11,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:39:11,863 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 03:39:11,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 03:39:11,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 03:40:57,156 WARN L227 SmtUtils]: Spent 18.85s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:40:57,157 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 03:40:57,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-23 03:40:57,918 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 03:40:57,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-23 03:40:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:40:58,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:00,466 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 03:41:00,467 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 63 treesize of output 62 [2021-11-23 03:46:35,542 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 03:46:35,542 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 108 treesize of output 107 [2021-11-23 03:46:38,671 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) is different from false [2021-11-23 03:46:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:46:56,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011831212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:56,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:46:56,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-23 03:46:56,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591895646] [2021-11-23 03:46:56,336 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:46:56,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 03:46:56,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:46:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 03:46:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1535, Unknown=196, NotChecked=84, Total=1980 [2021-11-23 03:46:56,339 INFO L87 Difference]: Start difference. First operand 3727 states and 5008 transitions. Second operand has 45 states, 43 states have (on average 5.511627906976744) internal successors, (237), 43 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:47:00,925 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false